EP0811097B1 - Plate resonator - Google Patents
Plate resonator Download PDFInfo
- Publication number
- EP0811097B1 EP0811097B1 EP96905783A EP96905783A EP0811097B1 EP 0811097 B1 EP0811097 B1 EP 0811097B1 EP 96905783 A EP96905783 A EP 96905783A EP 96905783 A EP96905783 A EP 96905783A EP 0811097 B1 EP0811097 B1 EP 0811097B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- plate
- resonator
- resonator according
- plate resonator
- sound
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 239000002184 metal Substances 0.000 claims abstract description 8
- 229910052751 metal Inorganic materials 0.000 claims abstract description 8
- 239000002390 adhesive tape Substances 0.000 claims abstract 2
- 239000006260 foam Substances 0.000 claims description 27
- 238000010521 absorption reaction Methods 0.000 claims description 21
- 239000000853 adhesive Substances 0.000 claims description 9
- 230000001070 adhesive effect Effects 0.000 claims description 9
- 239000000463 material Substances 0.000 claims description 9
- 229920001971 elastomer Polymers 0.000 claims description 6
- 239000000806 elastomer Substances 0.000 claims description 6
- 229910000831 Steel Inorganic materials 0.000 claims description 4
- 239000010959 steel Substances 0.000 claims description 4
- 238000000034 method Methods 0.000 claims description 3
- 239000004033 plastic Substances 0.000 claims description 3
- 229920003023 plastic Polymers 0.000 claims description 3
- 229920002635 polyurethane Polymers 0.000 claims description 3
- 239000004640 Melamine resin Substances 0.000 claims description 2
- 229920000877 Melamine resin Polymers 0.000 claims description 2
- 239000004698 Polyethylene Substances 0.000 claims description 2
- -1 polyethylene Polymers 0.000 claims description 2
- 229920000573 polyethylene Polymers 0.000 claims description 2
- 239000004814 polyurethane Substances 0.000 claims description 2
- 238000007688 edging Methods 0.000 claims 1
- 239000004744 fabric Substances 0.000 claims 1
- 239000007787 solid Substances 0.000 abstract 1
- 239000006096 absorbing agent Substances 0.000 description 46
- 238000010276 construction Methods 0.000 description 8
- 238000013016 damping Methods 0.000 description 8
- 239000012528 membrane Substances 0.000 description 8
- 239000002131 composite material Substances 0.000 description 7
- 238000013461 design Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 238000007667 floating Methods 0.000 description 5
- 230000006870 function Effects 0.000 description 5
- 238000005259 measurement Methods 0.000 description 5
- 238000012546 transfer Methods 0.000 description 5
- 238000009413 insulation Methods 0.000 description 4
- 229910052782 aluminium Inorganic materials 0.000 description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 3
- 230000005284 excitation Effects 0.000 description 3
- 239000002557 mineral fiber Substances 0.000 description 3
- 230000003584 silencer Effects 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 238000005253 cladding Methods 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 210000005069 ears Anatomy 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 239000011148 porous material Substances 0.000 description 2
- 125000006850 spacer group Chemical group 0.000 description 2
- 239000000725 suspension Substances 0.000 description 2
- 229920001817 Agar Polymers 0.000 description 1
- 229920001875 Ebonite Polymers 0.000 description 1
- 241001295925 Gegenes Species 0.000 description 1
- 230000005357 Hall field Effects 0.000 description 1
- XOJVVFBFDXDTEG-UHFFFAOYSA-N Norphytane Natural products CC(C)CCCC(C)CCCC(C)CCCC(C)C XOJVVFBFDXDTEG-UHFFFAOYSA-N 0.000 description 1
- 239000004642 Polyimide Substances 0.000 description 1
- 229920005830 Polyurethane Foam Polymers 0.000 description 1
- 238000002835 absorbance Methods 0.000 description 1
- 230000002745 absorbent Effects 0.000 description 1
- 239000002250 absorbent Substances 0.000 description 1
- 238000000862 absorption spectrum Methods 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- 239000010425 asbestos Substances 0.000 description 1
- ZYXYTGQFPZEUFX-UHFFFAOYSA-N benzpyrimoxan Chemical compound O1C(OCCC1)C=1C(=NC=NC=1)OCC1=CC=C(C=C1)C(F)(F)F ZYXYTGQFPZEUFX-UHFFFAOYSA-N 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000002845 discoloration Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 239000011888 foil Substances 0.000 description 1
- 231100001261 hazardous Toxicity 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 239000012774 insulation material Substances 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000691 measurement method Methods 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 239000011120 plywood Substances 0.000 description 1
- 229920001721 polyimide Polymers 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000000284 resting effect Effects 0.000 description 1
- 229910052895 riebeckite Inorganic materials 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
- 230000009747 swallowing Effects 0.000 description 1
- 230000002123 temporal effect Effects 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 239000004753 textile Substances 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
- 238000012549 training Methods 0.000 description 1
- 230000001052 transient effect Effects 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
- 208000008918 voyeurism Diseases 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B9/00—Ceilings; Construction of ceilings, e.g. false ceilings; Ceiling construction with regard to insulation
- E04B9/04—Ceilings; Construction of ceilings, e.g. false ceilings; Ceiling construction with regard to insulation comprising slabs, panels, sheets or the like
- E04B9/045—Ceilings; Construction of ceilings, e.g. false ceilings; Ceiling construction with regard to insulation comprising slabs, panels, sheets or the like being laminated
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/62—Insulation or other protection; Elements or use of specified material therefor
- E04B1/74—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls
- E04B1/82—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls specifically with respect to sound only
- E04B1/8209—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls specifically with respect to sound only sound absorbing devices
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/62—Insulation or other protection; Elements or use of specified material therefor
- E04B1/74—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls
- E04B1/82—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls specifically with respect to sound only
- E04B1/84—Sound-absorbing elements
- E04B1/86—Sound-absorbing elements slab-shaped
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/99—Room acoustics, i.e. forms of, or arrangements in, rooms for influencing or directing sound
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
- G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/16—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/172—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using resonance effects
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/62—Insulation or other protection; Elements or use of specified material therefor
- E04B1/74—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls
- E04B1/82—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls specifically with respect to sound only
- E04B2001/8263—Mounting of acoustical elements on supporting structure, e.g. framework or wall surface
- E04B2001/8281—Flat elements mounted parallel to a supporting surface with an acoustically active air gap between the elements and the mounting surface
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/62—Insulation or other protection; Elements or use of specified material therefor
- E04B1/74—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls
- E04B1/82—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls specifically with respect to sound only
- E04B2001/8263—Mounting of acoustical elements on supporting structure, e.g. framework or wall surface
- E04B2001/829—Flat elements mounted at an angle, e.g. right angle, to the supporting surface
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/62—Insulation or other protection; Elements or use of specified material therefor
- E04B1/74—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls
- E04B1/82—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls specifically with respect to sound only
- E04B1/84—Sound-absorbing elements
- E04B2001/8423—Tray or frame type panels or blocks, with or without acoustical filling
- E04B2001/8442—Tray type elements
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/62—Insulation or other protection; Elements or use of specified material therefor
- E04B1/74—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls
- E04B1/82—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls specifically with respect to sound only
- E04B1/84—Sound-absorbing elements
- E04B2001/8457—Solid slabs or blocks
- E04B2001/8461—Solid slabs or blocks layered
Definitions
- the invention relates to a plate resonator for broadband damping of rooms, for example in closed, relatively small rooms, for example: 4 x 5 m 2 and 3 m in height.
- the transfer function of a rectangular room with the dimensions of, for example, 5 x 4 x 3 m 3 shows in the undamped unfinished state with constant airborne sound excitation level differences of up to 40 dB between the maxima and minima for any transmission and reception points. If you consider that in a real situation the transfer function of the room, as shown in Figure 1 , is superimposed on that of a bass instrument, it becomes clear that the room can play along if you leave your natural resonances untreated.
- the spatial intensity distribution of the sound field at a certain frequency is as uneven as the frequency dependence of the entire room (see Fig . 2 ). But the decay behavior of the room during a transmission pause is also perceived as very uncomfortably fluctuating at frequencies between two resonance peaks by sensitive ears.
- the "distortions” that distort the sound up to the well-known "roar” of language and music all too often make such a demanding job unnecessarily difficult for demanding artists and sound engineers.
- a sound-absorbing multilayer board is known from DE 74 27 551 U1 has holes with a perforation area of at least 5% on the front. behind it then there is the absorbent foam plastic. Furthermore, from US-PS 32 15 225 a similar arrangement known with an inner layer of a plasterboard or Asbestos cement board; however, the front panel is also partially reflective with a cushioning pad, similar to an anti-drumming covering in passenger cars.
- the object of the invention is to provide a plate resonator that is simple in construction is and does not need artificial mineral fibers. This is according to the invention by the Plate resonator solved according to claim 1, some advantageous applications are in Claim 16 and advantageous embodiments characterized in the subclaims.
- the component according to the invention can be attached, for example, to the ceiling in a punctiform, strip-like or full-surface manner with the aid of adhesive, adhesive strips or so-called Velcro fasteners (4).
- Velcro fasteners (4) For assembly and disassembly as well as return or disposal of the eB, it would in any case be advantageous if the connections (3) of the front and back panels as well as those of the panel resonator and structure (5) could be detached again at any time without residues that are difficult to remove or dispose of. Numerous materials and connection technologies used in the textile and packaging industry are available for this.
- FIG. 5 An example of this, such as is recommended for wall cladding, is shown in Figure 5: the narrow angle rails (8), which are dowelled in the raw component using small plates (9) and give the eB support and fixation, remain invisible behind the front plate.
- the front panel can be locked, for example, by means of hard rubber pins on the back of the front panel as shown in Figure 6 , which snap into prepared holes in the panels (10) of the corner profiles in the manner of push buttons (11).
- the attachment can be designed so that the interior designer or decorator finds a structurally well fixed, stable, smooth surface that he can paint, print, coat, cover or structure as required without significantly changing its acoustic properties.
- the sound absorber does not stand in the way of the interior, but offers itself as an additional design element (e.g. also as a mirror) if the component is attached to the wall or is in the room.
- Figure 10 shows an example of such an ⁇ e measurement: measured from 100 Hz upwards with third-octave noise and below 100 Hz with sine excitation with the natural resonances (down to 35 Hz). If you only cover about 10% of the total area in the corners and edges with this prototype, its transfer function (see Fig. 1) can be smoothed according to Fig. 11 to hardly more than 10 dB level fluctuation below 100 Hz. The component according to the invention thus provides a very effective means of avoiding or eliminating the "booming" in small rooms.
- Figure 12 shows the reverberation time of a recording studio optimized with various prototypes (all with a construction depth of only 100 mm and a weight of 7 - 20 kg / m 2 ): with an approx. 30% occupancy, the reverberation time only increases below 63 Hz to slightly higher Values.
- the front plate with its vibrations can to a certain extent "adapt" to the spatial and temporal structure of the room modes and thus optimally deform and resonate due to its completely free mobility.
- this forced resonance is most pronounced in the corners and edges of the rectangular spaces, in which the airborne sound energy is concentrated at the low frequencies of the lowest eigenmodes of the room.
- a front panel supported at most at the 4 corners is so low (at least below 10 Hz) with its lowest natural frequency f 1.0 according to [10] that every room mode between 50 and 100 Hz finds adjacent panel modes with which it can vibrate coupled.
- GI for the plate supported on two opposite edges at a distance L, use GI.
- the back plate not only acts as a self-resilient element with high “inner” (viscoelastic) losses but with all-round open access to the airborne sound waves also as a (in relation to airborne sound) practically rigid, but open-pored structure with As is known, high "external” friction in the transient formed Shear layers.
- image 14a shows the plate resonator according to Figure 4.
- Figure 14b shows that a soft foam layer 101 is arranged in the sound direction in front of the front panel 1, front panel and Pad are connected by means of an all-over adhesive 102.
- Figure 14c shows one another possibility, namely the attachment of another thin front panel 103, the was constructed in the same way as the front panel 1, and that with the soft foam pad 101 is connected by the full-surface adhesive 104.
- Figure 14d shows another variant, the attachment of a further soft foam layer 105 by means of an adhesive 106 the front panel 103.
- the soft foam pads 101 and 105 are in particular for absorption at higher frequencies advantageous.
- the design according to Figure 14c causes the second plate to be an additional one Mass and the soft foam pad 101 acts as an additional spring.
- the soft foam pads can be of different thicknesses to sound absorb different frequencies.
- Another particularly advantageous application of the basic idea of the invention is for larger halls or rooms with a high ceiling are particularly advantageous.
- Figure 15a shows the plate resonator adapted for such applications.
- the plate resonator on the back of the back plate 2 has a thin one
- the Plate resonator according to Figure 15 a is by means of the suspensions 18 from the ceiling 5 suspended.
- the suspensions 18 are expediently designed such that they are variable in length in the well-known false ceilings.
- Figure 15b the plate resonator with a soft foam layer 101 is also analogous to Figure 14b equipped.
- Figure 15c shows another way of using the Plate resonator without the plate resonator on a rigid ceiling or back wall is appropriate.
- the plate resonator is floating in a tub 110, e.g. B. from Metal or plastic, with the tub having large holes, with a Perforated area> 30%.
- the trough 110 is then on the supporting beams below the ceiling 111 stored.
- Figure 15d shows a variant of 15c, where the plate 1a on the Tray 110 rests and the soft foam pad 101 floating in the tray 110 lies.
- Fleece cover 120 shown for better handling.
- Figure 16 shows the plate resonator as a sound absorber effective on both sides with a 2-mass / spring system
- the back plate 2a is arranged between plates 1b and 1c is and on these plates 1a and 1c on the other side soft foam pads 101 are attached.
- Soft foam pad, plate and back plate 2a are again using full-surface bonds bonded together and form a sandwich structure.
- This sound absorber can again be wrapped in a fleece 120 and by means of a tub or border 110 may be suspended. This arrangement comes in for high rooms Question.
- This sound absorber can also be used in normal high rooms and For example, be designed as a partition, wall element or room divider.
- the Tray or border 110 should then be off the floor or one if necessary existing edition be acoustically decoupled.
- the plate resonator not only works as an absorber (silencer) but also as Soundproofing for the rooms above, in the case of Figure 15, or the ones next to it Rooms in the case of use as a wall element or room divider.
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Acoustics & Sound (AREA)
- Electromagnetism (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Multimedia (AREA)
- Building Environments (AREA)
- Vibration Prevention Devices (AREA)
- Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)
- Transducers For Ultrasonic Waves (AREA)
- Soundproofing, Sound Blocking, And Sound Damping (AREA)
- Registering, Tensioning, Guiding Webs, And Rollers Therefor (AREA)
- Control Of Motors That Do Not Use Commutators (AREA)
- Piezo-Electric Or Mechanical Vibrators, Or Delay Or Filter Circuits (AREA)
Abstract
Description
Die Erfindung betrifft einen Plattenresonator zur breitbandingen Bedämpfung von Räumen, z.B. in geschlossenen, relativ kleinen Räumen, z.B: 4 x 5 m2 und 3 m Höhe.The invention relates to a plate resonator for broadband damping of rooms, for example in closed, relatively small rooms, for example: 4 x 5 m 2 and 3 m in height.
Schalldämpfende Maßnahmen in geschlossenen Räumen dienen bisher vor allem zwei ganz unterschiedlichen Zielen:
- möglichst guter Übertragung zwischen Schallquellen und auf diese fixierten Zuhörern ("Raumakustik"),
- möglichst geringer Einwirkung von Schallquellen auf durch diese belastete Arbeitsplätze ("Lärmbekämpfung").
- best possible transmission between sound sources and listeners fixed on them ("room acoustics"),
- minimal impact of sound sources on workplaces polluted by them ("noise control").
Während es im ersten Fall darauf ankommt, Schallereignisse im Raum so unverfälscht, natürlich und effektvoll wie möglich stattfinden zu lassen, geht es im zweiten Fall darum, diese so stark wie möglich in ihrem Geräuschspektrum zu verändern, wenn dabei nur ihre Lautstärke genügend reduziert werden kann. Neben dieser traditionellen Aufgabe für Akustiker wird einem dritten Problembereich bei Bauherren und Planern zunehmend Aufmerksamkeit geschenkt:
- der Rückwirkung kleiner Räume auf das Schallereignis (vor allem bei tiefen Frequenzen) und einer damit verbundenen ganz anderen Art von Belastungen an besonders hochwertigen Arbeitsplätzen:
- the repercussions of small rooms on the sound event (especially at low frequencies) and a completely different kind of stress associated with it in particularly high-quality workplaces:
Schlechte Sprachverständlichkeit und starke Klangverfärbung können die Arbeitsbedingungen von z.B. Sprechern, Musikern, Lehrern und Ton-ingenieuren sehr nachhaltig beeinträchtigen. Da diese "Raumrückwirkung" es Musikern in der Gruppe massiv erschwert, sich selbst zu hören und zu kontrollieren, animiert sie zum lauten Spielen. In nicht richtig bedämpften kleineren Räumen (z.B. in Kellergewölben, aber auch in teilweise überdachten Orchestergräben) können so durchaus gehörschädigende Schallpegel weit über 100 dB(A) aufgebaut werden.Poor speech intelligibility and strong sound discoloration can Working conditions of e.g. Speakers, musicians, teachers and sound engineers very much impair permanently. Because of this "spatial repercussions" there are musicians in the group massively more difficult to hear and control oneself, encourages them to be loud Play. In not properly damped smaller rooms (e.g. in cellar vaults, but also in partially covered ones Orchestra pits) can easily damage hearing levels well over 100 dB (A) being constructed.
Die Übertragungsfunktion eines Rechteckraumes mit den Abmessungen von z.B. 5 x 4 x 3 m3 weist im ungedämpften Rohbau-Zustand bei konstanter Luftschall-Anregung Pegelunterschiede bis zu 40 dB zwischen den Maxima und Minima für beliebige Sendeund Empfangspunkte auf. Wenn man bedenkt, daß sich in einer realen Situation die Übertragungsfunktion des Raumes, wie in Bild 1 dargestellt, mit derjenigen eines Baßinstruments überlagert, wird deutlich, daß der Raum kräftig mitspielen kann, wenn man seine Eigenresonanzen unbehandelt läßt. So ungleichförmig wie die Frequenzabhängigkeit des ganzen Raumes ist, so ungleichmäßig ist die räumliche Intensitätsverteilung des Schallfeldes bei einer bestimmten Frequenz (s. Bild 2). Aber auch das Abklingverhalten des Raumes während einer Sendepause wird bei Frequenzen zwischen zwei Resonanzspitzen von empfindlichen Ohren als sehr unangenehm schwankend empfunden. Den Klang verfälschende "Verzerrungen" bis hin zum bekannten "Dröhnen" bei Sprache wie Musik machen so anspruchsvollen Künstlern und Toningenieuren ihre qualifizierte Arbeit allzuoft unnötig schwer.The transfer function of a rectangular room with the dimensions of, for example, 5 x 4 x 3 m 3 shows in the undamped unfinished state with constant airborne sound excitation level differences of up to 40 dB between the maxima and minima for any transmission and reception points. If you consider that in a real situation the transfer function of the room, as shown in Figure 1 , is superimposed on that of a bass instrument, it becomes clear that the room can play along if you leave your natural resonances untreated. The spatial intensity distribution of the sound field at a certain frequency is as uneven as the frequency dependence of the entire room (see Fig . 2 ). But the decay behavior of the room during a transmission pause is also perceived as very uncomfortably fluctuating at frequencies between two resonance peaks by sensitive ears. The "distortions" that distort the sound up to the well-known "roar" of language and music all too often make such a demanding job unnecessarily difficult for demanding artists and sound engineers.
Das Problem ist aber, in abgeschwächter Form, auch in Hörsälen, Sitzungsräumen und Wohnzimmern weit verbreitet, wenn diese nur schwach möbliert sind; nur wissen die Nutzer mit weniger geschulten Ohren den Grund für ihr Unwohlsein in solchen Räumen oft nicht zu artikulieren. Die Tatsache, daß in manchen Räumen an Teilen der Decke hinter Lochplatten eine dünne Schicht aus z.B. Mineralfasern in gut gemeinter Absicht installiert wurde, kann das Problem übrigens nicht lösen; auch die nachträgliche Anbringung absichtsvoll strukturierter Weichschaumplatten hilft nicht richtig weiter, läßt manchmal die Problematik bei tiefen Frequenzen sogar noch deutlicher hervortreten. The problem is, however, in a weakened form, also in lecture halls, meeting rooms and Living rooms are widespread when they are poorly furnished; only they know Users with less trained ears often find the reason for their discomfort in such rooms not to articulate. The fact that in some rooms on parts of the ceiling behind Perforated plates a thin layer of e.g. Mineral fibers installed with good intentions incidentally, cannot solve the problem; also the subsequent attachment Intentionally structured soft foam panels do not really help, sometimes leaves them Problems at low frequencies are even more pronounced.
So ist aus der DE 74 27 551 U1 eine schallabsorbierende Mehrschichtplatte bekannt, die frontseitig Löcher mit einem Lochflächenanteil von mindestens 5 % aufweist. Dahinter befindet sich dann der absorbierende Schaumkunststoff. Weiterhin ist aus der US-PS 32 15 225 eine ähnliche Anordnung bekannt mit einer Innenschicht aus einer Gipsplatte oder Asbestzementplatte; allerdings ist die Frontplatte zum Teil auch reflektierend ausgebildet mit einer dämpfenden Auflage, ähnlich einem Antidröhnbelag in Personenkraftwagen.A sound-absorbing multilayer board is known from DE 74 27 551 U1 has holes with a perforation area of at least 5% on the front. behind it then there is the absorbent foam plastic. Furthermore, from US-PS 32 15 225 a similar arrangement known with an inner layer of a plasterboard or Asbestos cement board; however, the front panel is also partially reflective with a cushioning pad, similar to an anti-drumming covering in passenger cars.
Im Bereich des Studiobaus ist es seit langem üblich, bei Bedarf spezielle Tiefen-Absorber in
kleine Aufnahme- und Wiedergaberäume einzubauen. Allerdings beanspruchen diese
bisher viel Raum und erfordern den Einsatz großer Mengen künstlicher Mineralfasern
(KMF). Mit den bekannten "Kassetten-Decken", "Baß-Fallen" und "Kanten-Absorbern" ist
es allerdings noch relativ teuer und raumverschwendend, bei tieferen Frequenzen die
unbedingt notwendige Absorption zu besorgen [2] ([2] Fuchs, H.V.: Zur Absorption tiefer
Frequenzen in Tonstudios. Rundfunktechnische Mitteilungen 36 (1992), H. 1, S. 1-11).
Anstelle glatter Raumbegrenzungen entsprechend dem jeweiligen architektonischen
Entwurf springen diese Absorber förmlich aus der Wand oder Decke heraus. Bei späteren
Nachbesserungen weiß man sich im allgemeinen nur mit ebenfalls ziemlich voluminösen
"Ecken-Stehern" mehr schlecht als recht zu helfen. Seit Jahren beschäftigt sich die
Anmelderin mit der Entwicklung verschiedener Alternativer/Faserfreier Absorber für den
technischen Schallschutz [3] ([3] Fuchs, H.V.; Ackermann, U.; Rambausek, N.: Schallschutz:
Schallabsorber für einen breiten Frequenzbereich. Deutsches Architektenblatt 22 (1990),
H.7, S. 1129-1132). Mit dem sogenannten "Membran-Absorber" nach [2] (Bild 3) konnten
bereits einige Nachteile konventioneller Absorber abgebaut werden:
Bei zahlreichen Anwendungen in der Raumakustik wurden aber auch einige Nachteile des
MA deutlich:
In den meisten raumakustischen Anwendungen kommt die außerordentliche Robustheit der MA, die durch ihren äußeren "Rahmen", ihre (bei einseitiger Auslegung) rückseitige "Wanne" sowie ihre inneren "Waben" bedingt wird, gar nicht zur Geltung. Dagegen will man die Absorber häufig viel lieber hinter einer großflächig tapezierten Fläche (z.B. auch einer "Vorsatzschale") verschwinden lassen. Manchen Architekten und Bauherren sehen irgendwie hervortretende Tiefen-Absorber auch zu technisch aus. Extraordinary robustness comes in most room acoustic applications of the MA, which by its outer "frame", its (in the case of one-sided interpretation) back "Tub" and its inner "honeycomb" is not considered at all. Against want the absorbers are often preferred behind a large wallpapered area (e.g. also a "facing shell"). See some architects and builders somehow protruding depth absorbers are too technical.
Herkömmliche Mitschwinger als Schallabsorber, auch die sogenannten Folien-, Membranund Platten-Resonatoren (s. z.B. Tafel 7, S. 409- 420 in [4] (Fasold, W.; Sonntag, E.; Winkler, H.: Bau- und Raumakustik. Verlag Bauwesen, Berlin, 1987.)) weisen zwar oft eine mehr oder weniger ebene Oberfläche auf. Die Platten aus z.B. Holzspan, Hartfaser, Sperrholz oder Gipskarton werden aber üblicherweise auf einer Unterkonstruktion aus Holzbalken und -leisten montiert, die naturgemäß immer etwas "arbeitet". Deswegen lassen sich solche "Vertäfelungen" zwar streichen, aber kaum dauerhaft übertapezieren. Man meint (s. S. 207 in [5]: Biehn K.; Gruhl, S.: Absorptionsschalldämpfer. In: Lärmbekämpfung. Hrsg. W. Schirmer, Verlag Tribüne, Berlin 1989), daß die Schalldämpfung bei und in der Nähe der aus Masse der Platte und Federsteife des zwischen Platte und schallharter Rückwand eingeschlossenen Luftkissens definierten Resonanzfrequenz durch die inneren Verluste bestimmt wird. Zusätzlich z.B. in der Form einer losen porösen Absorberfüllung im Luftvolumen eingebrachte "Strömungswiderstände" können nach dieser weit verbreiteten Vorstellung die Bandbreite dieser Resonanz-Schalldämpfer etwas vergrößern. Es lag daher nahe, den Luftraum aus diesen und einigen hygienischen und praktischen Gründen heraus stets rundum durch Leisten oder Rahmen mehr oder weniger dicht abzuschließen.Conventional resonators as sound absorbers, also the so-called foil, membrane and Plate resonators (see e.g. Table 7, pp. 409-420 in [4] (Fasold, W .; Sonntag, E .; Winkler, H .: Building and Room Acoustics. Verlag Bauwesen, Berlin, 1987.)) often point a more or less flat surface. The plates from e.g. Wood chip, hardboard, Plywood or plasterboard are usually made on a substructure Wooden beams and strips installed, which of course always "work" a little. therefore such "paneling" can be deleted, but can hardly be overpainted permanently. One thinks (see p. 207 in [5]: Biehn K .; Gruhl, S .: Absorption silencer. In: Noise abatement. Ed. W. Schirmer, Verlag Tribüne, Berlin 1989) that the Sound absorption at and near the mass of the plate and spring stiffness of the between the plate and the soundproof rear wall of the enclosed air cushion Resonance frequency is determined by the internal losses. Additionally e.g. in the shape a loose porous absorber filling in the air volume introduced "flow resistance" according to this widespread idea, the range of these Increase the size of the resonance silencer. It was therefore obvious to get the airspace out of these and some hygienic and practical reasons, always with strips or to close the frame more or less tightly.
In (Fasold, W.: Schallabsorber und ihr Einsatz in Wohn- und Gesellschaftsbauten. In: Taschenbuch Akustik, Teil II. Hrsg. W. Fasold et al., Verlag Technik, Berlin, 1984) heißt es hierzu explizit: "Der Schallabsorptionsgrad bei der Resonanzfrequenz beträgt etwa 0,5 bis 0,8, ohne Dämmstoff im Luftraum nur 0,3 bis 0,5. Voraussetzung ist dabei, daß die Platte tatsächlich frei schwingen kann; der Dämmstoff darf deshalb keinesfalls fest zwischen Wand und Platte eingestopft werden ... Günstig wirkt sich eine Kassettierung des Luftvolumens aus, weil dadurch die Schallausbreitung im Luftraum unterbunden wird."In (Fasold, W .: Sound absorbers and their use in residential and social buildings. In: Paperback Acoustics, Part II. Ed. W. Fasold et al., Verlag Technik, Berlin, 1984) explicitly: "The degree of sound absorption at the resonance frequency is about 0.5 to 0.8, without insulation in the air space only 0.3 to 0.5. The prerequisite is that the plate can actually swing freely; The insulation material must therefore never be firmly between Wall and plate are stuffed ... A cassette of the Air volume, because this prevents the propagation of sound in the air space. "
Aus DE 94 00 092.1 U ist ein Schallschutzelement mit schalldämmender und schallabsorbierender Wirkung bekannt, das eine Lochblechfläche mit seitlicher Umrandung aufweist, einen in der Umrandung enthaltenen Schallabsorber und einen einstellbaren Abstandshalter zur Rückwand. Dieses Element dient als Schallabsorber aufgrund der Schall absorption des Schaumes und soll als Helmholtz-Resonator aufgrund des Hohlraumes der durch den variablen Abstandshalter hervorgerufen ist, frequenzabhängig geregelt werden. Die Lochbleche bewirken, daß der Schall durch die Löcher in den Schaum und durch den Schaum hindurchtreten kann und zum einen von dem Schaum absorbiert wird und in dem Raum dahinter durch den Resonatorraum ebenfalls absorbiert wird. Dieses Element ist zum einen kein Plattenresonator, da der Schaum keine Rückwand hat und daher in dem Schaum keine Resonanz auftreten kann, zum anderen ist die Wirkungsweise durch die Ausbildung als Hohlraumresonator anders.DE 94 00 092.1 U describes a soundproofing element with a sound-absorbing and sound-absorbing element Effect known, which has a perforated sheet surface with a lateral border, a sound absorber contained in the border and an adjustable spacer to the back wall. This element serves as a sound absorber due to the sound absorption of the foam and is said to be a Helmholtz resonator due to the cavity of the is caused by the variable spacer can be regulated depending on the frequency. The perforated plates cause the sound through the holes in the foam and through the foam can pass through and on the one hand is absorbed by the foam and in the space behind is also absorbed by the resonator space. This element is on the one hand not a plate resonator because the foam has no back wall and is therefore in the foam can not resonate, on the other hand, the mode of action is through training as a cavity resonator is different.
Aus der US 4,468,431 ist eine Sandwich-Anordnung zur thermischen Isolierung und Schwingungsdämpfung, bevorzugt im Flugzeugbau, bekannt. Diese Sandwich-Struktur wird auf die Flugzeugstruktur geklebt, deren Schwingungen gedämpft werden sollen. Zu diesem Zweck weist die Sandwich-Struktur ein geschäumtes Polyimid auf, das auf einer oder beiden Seiten mittels einer nicht vollflächigen Klebung mit einer dünnen Folie aus z.B. Aluminium kaschiert ist. Die Schwingungen der Metallwand des Flugzeuges werden durch das angeklebte Sandwichmaterial gedämpft, eine Resonanz kann hier also nicht auftreten. Diese Anordnung entspricht mehr dem im Karosseriebau bekannten Antidröhnbelag, der die Schwingungen der Blechstrukturen dämpfen soll bzw. den Schall dämmen.From US 4,468,431 is a sandwich arrangement for thermal insulation and Vibration damping, preferably in aircraft construction, is known. This sandwich structure is glued to the aircraft structure, the vibrations of which are to be dampened. To For this purpose, the sandwich structure has a foamed polyimide, which is on a or both sides with a non-full-surface adhesive with a thin film e.g. Aluminum is laminated. The vibrations of the metal wall of the aircraft are dampened by the glued sandwich material, so there is no resonance here occur. This arrangement corresponds more closely to the anti-drumming covering known in body construction, which is supposed to dampen the vibrations of the sheet metal structures or the sound insulate.
Aufgabe der Erfindung ist es, einen Plattenresonator zu schaffen, der einfach aufgebaut ist und ohne künstliche Mineralfasern auskommt. Dies wird erfindungsgemäß durch den Plattenresonator nach Anspruch 1 gelöst, einige vorteilhafte Anwendungen sind in Anspruch 16 und vorteilhafte Ausgestaltungen in den Unteransprüchen gekennzeichnet. The object of the invention is to provide a plate resonator that is simple in construction is and does not need artificial mineral fibers. This is according to the invention by the Plate resonator solved according to claim 1, some advantageous applications are in Claim 16 and advantageous embodiments characterized in the subclaims.
Im folgenden wird die Erfindung anhand der Bilder 1-15 erläutert, wobei die Bilder 1-3 den Stand der Technik darstellen.In the following the invention is explained with reference to Figures 1-15, Figures 1-3 den Represent state of the art.
Die Bilder zeigen:
- Bild 1:
- Übertragungsfunktion eines etwa 5 x 4 x 3 m3 großen Rechteckraumes im Rohbauzustand
- Bild 2:
- Durch Schwärzung angedeutete Schalldruckverteilung eines 7,1 x 6,2 x 2,3 m3 großen Rechteckraumes [1]
- Bild 3:
- Kompaktabsorber nach DE 35 04 208 (MA), bestehend aus:
(a) Rückwand bzw. Wanne
(b) Waben- bzw. Kassetten-Struktur
(c) Hohlkammern, nur mit Luft gefüllt
(d) Schwingungsfähige Lochmembran
(e) Schwingungsfähige Deckmembran - Bild 4:
- Verbundplatten-Resonator (schematisch) zur breitbandigen Bedämpfung kleiner
Räume
1 Freischwingende Frontplatte (z.B. 0,5 bis 2 mm St oder AL)
2 Mitschwingende poröse Dämpfungsschicht (z.B. 50 bis 200 mm Melaminharz- Weichschaum)
3, 4 Ganzflächige adhäsive Verbindung zwischen Front- und Rückenplatte bzw. Rückenplatte und Rohbauteil 5
5 Decke des Raumes
6, 7 Wände des Raumes - Bild 5:
- Verdeckte Kanten-Befestigung eines Verbundplatten-Resonators in einer Raumecke
- Bild 6:
- Formschlüssige oder Schraubverbindungen zwischen Frontplatte und Eckprofilen gem. Bild 5
- Bild 7:
- Sichtbare Kanten-Befestigung eines Verbundplatten-Resonators in einer Raumecke
- Bild 8:
- Absorptionsgrad α5 einer Holzkassettendecke [3]
- Bild 9:
- Sogenannte "Baßfalle" [3]
- Bild 10:
- (Äquivalenter) Absorptionsgrad eines Prototyps des erfindungsgemäßen Bauteils mit
einer Einzelfläche von jeweils 1,4 m2, in 4 Raumecken angeordnet [10] - Bild 11:
- Übertragungsfunktion des Raumes wie in Bild 1 nach dem Einbau von 6 jeweils 1,4 m2
großen Plattenresonators in den Raumecken - Bild 12:
- Nachhallzeit eines Tonstudios mit 30 % ALFA-Auskleidung
- Bild 13:
- Gemäß Bild 10 "liegend" angeordnete Prototypen des Plattenresonators.
- Bild 14
- Eine weitere Variante des Plattenresonators
a) wie Bild 4
b) mit zusätzlicher Weichschaumauflage
c) mit zusätzlicher Platte 103 auf der Weichschaumauflage 101
d) mit einer weiteren Weichschaumauflage 105 auf der Platte 103 - Bild 15
- Eine Weiterentwicklung ohne starre Rückwand
a) als 2-Massen/Feder-System
b) mit zusätzlicher Weichschaumauflage 101
c) der Plattenresonator in einer Wanne 110, wobei beide Platten 1 und 1a "schwimmend" gelagert sind
d) mit Vlies-Abdeckung 120 mit einer schwimmenden Platte und einer auf der Wanne aufliegenden Platte 1a - Bild 16
- Eine weitere Ausführung des Plattenresonators bei der Verwendung als Wandelement oder im Raum hängendes Element, z.B. als Vorsatzschale.
- Image 1 :
- Transfer function of a roughly 5 x 4 x 3 m 3 rectangular space in the unfinished state
- Image 2 :
- Sound pressure distribution indicated by blackening of a 7.1 x 6.2 x 2.3 m 3 rectangular space [1]
- Image 3 :
- Compact absorber according to DE 35 04 208 (MA), consisting of:
(a) rear wall or tub
(b) honeycomb or cassette structure
(c) Hollow chambers filled with air only
(d) Vibration-perforated membrane
(e) Vibrating cover membrane - Image 4:
- Composite plate resonator (schematic) for broadband damping of small rooms
1 free-floating front panel (e.g. 0.5 to 2 mm St or AL)
2 resonating porous damping layer (e.g. 50 to 200 mm melamine resin soft foam)
3, 4 Full-surface adhesive connection between the front and back plate or back plate and raw component 5
5 ceiling of the room
6, 7 walls of the room - Image 5:
- Concealed edge fastening of a composite panel resonator in a corner of the room
- Image 6 :
- Positive or screw connections between the front panel and corner profiles acc. Image 5
- Image 7:
- Visible edge fastening of a composite panel resonator in a room corner
- Image 8:
- Absorbance α 5 of a wooden coffered ceiling [3]
- Image 9:
- So-called "bass trap" [3]
- Image 10:
- (Equivalent) degree of absorption of a prototype of the component according to the invention
a single area of 1.4 m 2 , arranged in 4 corners [10] - Image 11:
- Transfer function of the room as in Figure 1 after installing 6 each 1.4 m 2
large plate resonators in the corners of the room - Image 12 :
- Reverberation time of a recording studio with 30% ALFA lining
- Image 13 :
- Prototype of the plate resonator arranged "lying" according to Fig. 10.
- Image 14
- Another variant of the plate resonator
a) as in picture 4
b) with additional soft foam pad
c) with an additional plate 103 on the soft foam pad 101
d) with a further soft foam layer 105 on the plate 103 - Image 15
- A further development without a rigid rear wall
a) as a 2-mass / spring system
b) with additional soft foam pad 101
c) the plate resonator in a tub 110, both plates 1 and 1a being "floating"
d) with fleece cover 120 with a floating plate and a plate 1a resting on the tub - Image 16
- Another version of the plate resonator when used as a wall element or element hanging in the room, for example as a facing.
Gegenüber dem Stand der Technik verzichtet das erfindungsgemäße Bauteil gemäß Bild 4 auf
- den umlaufenden Rahmen
- die rückseitige Wanne
- die streifenförmige Unterkonstruktion,
- jegliche Kassettierung im Luftzwischenraum
- den losen Strömungswiderstand daselbst.
- the surrounding frame
- the back tub
- the strip-shaped substructure,
- any cassette in the air gap
- the loose flow resistance there.
Stattdessen kennzeichnet den erfindungsgemäßen Plattenresonator:
Dabei kann die Befestigung des erfindungsgemäßen Bauteils, z.B. an der Decke, punktförmig, streifenförmig oder ganzflächig mit Hilfe von Klebstoff, Klebstreifen oder sogenannten Klettverbindungen (4) geschehen. Für Montage und Demontage sowie Rückführung oder Entsorgung des e.B. wäre es jedenfalls von Vorteil, wenn die Verbindungen (3) von Front- und Rückenplatte ebenso wie die von Plattenresonator und Baukörper (5) ohne schlecht entfernbare oder zu entsorgende Rückstände jederzeit wieder gelöst werden könnten. Hierfür stehen zahlreiche in der Textil- und Verpackungsindustrie verwendete Materialien und Verbindungstechniken zur Verfügung. Man kann aber auch Befestigungselemente, die zur Montage von Fassadenelementen (außen) und Vorsatzschalen (innen) in vielfältiger Ausführungsform zum Einsatz kommen, so verwenden, daß das an das inhomogene Schallfeld in kleinen Räumen angepaßte erzwungene Mitschwingen der innig verbundenen Front- und Rückenplatten so wenig wie möglich durch diese behindert wird. Ein solches Beispiel, wie es sich z.B. zur Wandauskleidung empfiehlt, zeigt Bild 5: die schmalen Winkelschienen (8), die z.B. mittels kleiner Platten (9) im Rohbauteil verdübelt werden und dem e.B. Halt und Fixierung geben, bleiben hinter der Frontplatte unsichtbar. Die Arretierung der Frontplatte kann z.B. formschlüssig durch an der Rückseite der Frontplatte angebrachte Hartgummi-Zapfen nach Bild 6 geschehen, die in vorbereitete Löcher in den Platten (10) der Eckprofile nach Art von Druckknöpfen (11) einrasten. In jedem Falle empfiehlt sich die Anbringung einer dauerelastisch nachgiebigen Schicht (3) aus einem Elastomer auch zwischen der Frontplatte und den Eckprofilen. Aber auch eine Verschraubung ohne (12) oder mit (13) einer gewissen Einsenkung an den Durchgangslöchern der Frontplatte nach Bild 6 ist denkbar. Man kann bei sichtbarer Kantenbefestigung, wie in Bild 7 skizziert, auch die Kanten-Überdeckungen als Stilmittel zur Gestaltung der Oberfläche mit einsetzen. Jedenfalls kann die Befestigung so gestaltet werden, daß der Innenarchitekt oder Dekorateur eine statisch gut fixierte, stabile, glatte Oberfläche vorfindet, die er nach Belieben überstreichen, bedrucken, beschichten, bespannen oder strukturieren kann, ohne seine schalltechnischen Eigenschaften wesentlich zu verändern. Der Schallabsorber steht damit dem Innenausbau nicht im Wege, sondern bietet sich als zusätzliches Gestaltungselement (z.B. auch als Spiegel) an, wenn das Bauteil an der Wand befestigt ist oder im Raum steht.The component according to the invention can be attached, for example, to the ceiling in a punctiform, strip-like or full-surface manner with the aid of adhesive, adhesive strips or so-called Velcro fasteners (4). For assembly and disassembly as well as return or disposal of the eB, it would in any case be advantageous if the connections (3) of the front and back panels as well as those of the panel resonator and structure (5) could be detached again at any time without residues that are difficult to remove or dispose of. Numerous materials and connection technologies used in the textile and packaging industry are available for this. But you can also use fasteners that are used to assemble facade elements (outside) and facing shells (inside) in a variety of designs so that the forced resonance of the intimately connected front and back panels adapted to the inhomogeneous sound field in small rooms is hampered by this as possible. An example of this, such as is recommended for wall cladding, is shown in Figure 5: the narrow angle rails (8), which are dowelled in the raw component using small plates (9) and give the eB support and fixation, remain invisible behind the front plate. The front panel can be locked, for example, by means of hard rubber pins on the back of the front panel as shown in Figure 6 , which snap into prepared holes in the panels (10) of the corner profiles in the manner of push buttons (11). In any case, it is advisable to apply a permanently elastic layer (3) made of an elastomer between the front panel and the corner profiles. But a screw connection without (12) or with (13) a certain depression at the through holes of the front panel according to Figure 6 is also conceivable. With visible edge fastening, as outlined in Figure 7 , the edge overlaps can also be used as a stylistic device to design the surface. In any case, the attachment can be designed so that the interior designer or decorator finds a structurally well fixed, stable, smooth surface that he can paint, print, coat, cover or structure as required without significantly changing its acoustic properties. The sound absorber does not stand in the way of the interior, but offers itself as an additional design element (e.g. also as a mirror) if the component is attached to the wall or is in the room.
Wie alle vom einfallenden Luftschall zum Mitschwingen anzuregenden Schallabsorber muß
auch das erfindungsgemäße Bauteil auf den gewünschten Frequenzbereich abgestimmt
werden. Für Räume unter ca. 200 m3 ist der Frequenzbereich von 125 bis 63 oder gar 50
Hz von besonderem Interesse [1] ([1] Fuchs, H.V.; Hunecke, J.: Der Raum spielt mit bei
tiefen Frequenzen. Das Musikinstrument 42 (1993), H. 8, S. 40-46.). Wenn in der Literatur
überhaupt Absorptionsgrade unter 125 Hz zu finden sind (s. Tafel 7 in [4]), so werden
Zahlenwerte von kaum mehr als 0,6 bei 100 Hz und selten mehr als 0,3 bei 63 Hz
angegeben. Dies hat wohl drei Ursachen:
Bild 10 zeigt ein Beispiel einer solchen αe-Messung: ab 100 Hz aufwärts mit Terzrauschen und unterhalb 100 Hz mit Sinus-Anregung bei den Eigenresonanzen (bis 35 Hz herunter) gemessen. Wenn man mit diesem Prototyp nur etwa 10 % der gesamten Raumbegrenzungsfläche in den Ecken und Kanten belegt, so läßt sich seine Übertragungsfunktion (vgl. Bild 1) gemäß Bild 11 auf kaum mehr als 10 dB Pegelschwankung unter 100 Hz glätten. Mit dem erfindungsgemäßen Bauteil steht damit ein sehr effektives Mittel zur Verfügung, um in kleinen Räumen das "Dröhnen" zu vermeiden bzw. zu beseitigen. Bild 12 zeigt die mit verschiedenen Prototypen (alle mit nur 100 mm Bautiefe und einem Flächengewicht von 7 - 20 kg/m2) optimierte Nachhallzeit eines Tonstudios: bei einer ca. 30%-igen Belegung steigt die Nachklingzeit erst unterhalb 63 Hz auf etwas höhere Werte an. Figure 10 shows an example of such an α e measurement: measured from 100 Hz upwards with third-octave noise and below 100 Hz with sine excitation with the natural resonances (down to 35 Hz). If you only cover about 10% of the total area in the corners and edges with this prototype, its transfer function (see Fig. 1) can be smoothed according to Fig. 11 to hardly more than 10 dB level fluctuation below 100 Hz. The component according to the invention thus provides a very effective means of avoiding or eliminating the "booming" in small rooms. Figure 12 shows the reverberation time of a recording studio optimized with various prototypes (all with a construction depth of only 100 mm and a weight of 7 - 20 kg / m 2 ): with an approx. 30% occupancy, the reverberation time only increases below 63 Hz to slightly higher Values.
Als "Tiefenschlucker" ist der Platten- oder Paneele-Resonator gem. Tafel 7 in [4] in vielen
Konzertsälen anzutreffen. Seine Resonanzfrequenz läßt sich nach [8] ([8] Cremer, L.;
Müller, H.A.: Die wissenschaftlichen Grundlagen der Raumakustik, Band 1, Hirzel Verlag,
Stuttgart, 1978) (§§ 29 bis 31) durch
Bei Plattenabmessungen in der Größenordnung von 1 bis 2 m kann sich die Frontplatte mit
ihren Schwingungen in gewisser Weise an die räumliche und zeitliche Struktur der
Raummoden "anpassen" und so wegen ihrer rundum freien Beweglichkeit optimal
verformen und mitschwingen. Am stärksten wird dieses erzwungene Mitschwingen
natürlich in den Ecken und Kanten der Rechteckräume, in denen sich die Luftschall-Energie
bei den tiefen Frequenzen der niedrigsten Eigenmoden des Raumes stark konzentriert. Eine
allenfalls an den 4 Ecken aufgestützte Frontplatte liegt mit ihrer tiefsten Eigenfrequenz f1,0
nach [10] so niedrig (jedenfalls unter 10 Hz), daß jede Raummode zwischen 50 und 100 Hz
benachbarte Plattenmoden findet, mit denen sie gekoppelt schwingen kann. Für die an
zwei im Abstand L einander gegenüberliegenden Rändern aufgestützte Platte wird mit GI.
(6,41) in [8]
So wie man durch Körperschall angeregte Bleche z.B. im Karosseriebau mit einem
viskoelastischen ("Antidröhn"-) Belag bedämpft, so könnte man daran denken, die vom
Luftschall erzwungenen Schwingungen der Frontplatte durch einen etwa gleich dicken,
z.B. bituminösen Belag zu absorbieren. Die Erfindung geht aber noch einen
entscheidenden Schritt weiter: sie ersetzt den gesamten Luftzwischenraum durch eine
sowohl federnde, als auch dämpfende Elastomer-Platte. Diese reduziert mit ihrer
gegenüber Luft kleineren Schallgeschwindigkeit CD die Resonanzfrequenz nach Gl.(3),
gleichzeitig wirkt aber in derselben Gleichung ihre größere Dichte ρD in anderer Richtung:
Die Rückenplatte wirkt aber nicht nur als selbst federndes Element mit hohen "inneren" (viskoelastischen) Verlusten sondern, bei rundum offenem Zugang der Luftschallwellen auch noch als (dem Luftschall gegenüber) praktisch starre, aber offenporige Struktur mit bekanntermaßen hoher "äußerer" Reibung in den sich bildenden instationären Scherschichten. The back plate not only acts as a self-resilient element with high "inner" (viscoelastic) losses but with all-round open access to the airborne sound waves also as a (in relation to airborne sound) practically rigid, but open-pored structure with As is known, high "external" friction in the transient formed Shear layers.
Den verschiedenen Wirkungsmechanismen entsprechend lassen sich typischerweise 3
starke Dämpfungseffekte im Absorptionssprektrum von Bild 10 ablesen, das nach einem
auf das spezielle Problem zugeschnittenen Meßverfahren ermittelt wurde:
Weitere vorteilhafte Ausgestaltungen sind in den Bildern 14, 15 und 16 dargestellt. Bild 14a zeigt den Plattenresonator gemäß Bild 4. Bild 14b zeigt daß eine Weichschaum-Auflage 101 in Schallrichtung vor der Frontplatte 1 angeordnet ist, wobei Frontplatte und Auflage mittels einer ganzflächigen Klebung 102 verbunden sind. Bild 14c zeigt eine weitere Möglichkeit und zwar die Anbringung einer weiteren dünnen Frontplatte 103, die genauso aufgebaut wurde wie die Frontplatte 1, und die mit der Weichschaumauflage 101 durch die ganzflächige Verklebung 104 verbunden ist. Bild 14d zeigt eine weitere Variante, die Anbringung einer weiteren Weichschaumauflage 105 mittels einer Verklebung 106 an der Frontplatte 103.Further advantageous configurations are shown in Figures 14, 15 and 16. image 14a shows the plate resonator according to Figure 4. Figure 14b shows that a soft foam layer 101 is arranged in the sound direction in front of the front panel 1, front panel and Pad are connected by means of an all-over adhesive 102. Figure 14c shows one another possibility, namely the attachment of another thin front panel 103, the was constructed in the same way as the front panel 1, and that with the soft foam pad 101 is connected by the full-surface adhesive 104. Figure 14d shows another variant, the attachment of a further soft foam layer 105 by means of an adhesive 106 the front panel 103.
Die Weichschaumauflagen 101 und 105 sind insbesondere zur Absorption bei höheren Frequenzen von Vorteil. Die Ausgestaltung nach Bild 14c bewirkt, daß die zweite Platte als zusätzliche Masse und die Weichschaumauflage 101 als zusätzliche Feder wirkt. Die Weichschaumauflagen können dabei verschieden dick ausgebildet sein, um Schall bei verschiedenen Frequenzen zu absorbieren.The soft foam pads 101 and 105 are in particular for absorption at higher frequencies advantageous. The design according to Figure 14c causes the second plate to be an additional one Mass and the soft foam pad 101 acts as an additional spring. The soft foam pads can be of different thicknesses to sound absorb different frequencies.
Eine weitere besonders vorteilhafte Anwendung des Grundgedankens der Erfindung ist für größere Hallen bzw. Räume mit einer hohen Decke besonders vorteilhaft. In derartigen Gebäuden z. B. Repräsentationsräumen und Industriehallen wird dann die Decke künstlich heruntergezogen bzw. tiefergehängt. In Industriebauten sind dann oft unterhalb der Decke Lüftungskanäle, elektrische und/oder pneumatische Leitungen oder Kanäle angeordnet.Another particularly advantageous application of the basic idea of the invention is for larger halls or rooms with a high ceiling are particularly advantageous. In such buildings z. B. Representative rooms and industrial halls then the ceiling becomes artificial pulled down or hung lower. In industrial buildings, these are often below the ceiling Ventilation ducts, electrical and / or pneumatic lines or ducts arranged.
In Bild 15a ist der Plattenresonator für derartige Anwendungen angepaßt dargestellt. Für diesen Zweck weist der Plattenresonator auf der Rückseite der Rückenplatte 2 eine dünneFigure 15a shows the plate resonator adapted for such applications. For for this purpose, the plate resonator on the back of the back plate 2 has a thin one
Platte 1a analog zu der Frontplatte 1 auf, so daß der Resonator mit den beiden Massen der Platten 1 und 1a mit der dazwischenliegenden Feder 2 schwingt, wobei die beiden Platten 1 und 1a gegeneinander schwingen, wie sie das auch nach Bild 14c tun. Der Plattenresonator nach Bild 15 a ist mittels der Abhängungen 18 von der Decke 5 abgehängt. Die Abhängungen 18 sind zweckmäßigerweise längenvariabel ausgestaltet wie bei den allgemein bekannten Unterdecken.Plate 1a analog to the front plate 1, so that the resonator with the two masses of Plates 1 and 1a swinging with the spring 2 in between, the two plates 1 and 1a vibrate against each other, as they do according to Fig. 14c. The Plate resonator according to Figure 15 a is by means of the suspensions 18 from the ceiling 5 suspended. The suspensions 18 are expediently designed such that they are variable in length in the well-known false ceilings.
In Bild 15b ist zusätzlich der Plattenresonator mit einer Weichschaumauflage 101 analog zu Bild 14b ausgestattet. Bild 15c zeigt eine weitere Möglichkeit der Verwendung des Plattenresonators, ohne daß der Plattenresonator an einer starren Decke oder Rückwand angebracht ist. Hier liegt der Plattenresonator schwimmend in einer Wanne 110, z. B. aus Metall oder Kunststoff, wobei die Wanne großflächige Löcher aufweist, mit einem Lochflächenanteil > 30%. Die Wanne 110 ist dann unterhalb der Decke auf Tragbalken 111 gelagert. In Bild 15d ist eine Variante von 15c dargestellt, wo die Platte 1a auf der Wanne 110 aufliegt und die Weichschaumauflage 101 schwimmend in der Wanne 110 liegt. In Bild 15d ist zusätzlich zwischen den Plattenresonator und der Wanne 110 eine Vlies-Abdeckung 120 zur besseren Handhabung eingezeichnet.In Figure 15b, the plate resonator with a soft foam layer 101 is also analogous to Figure 14b equipped. Figure 15c shows another way of using the Plate resonator without the plate resonator on a rigid ceiling or back wall is appropriate. Here the plate resonator is floating in a tub 110, e.g. B. from Metal or plastic, with the tub having large holes, with a Perforated area> 30%. The trough 110 is then on the supporting beams below the ceiling 111 stored. Figure 15d shows a variant of 15c, where the plate 1a on the Tray 110 rests and the soft foam pad 101 floating in the tray 110 lies. In Figure 15d there is an additional one between the plate resonator and the trough 110 Fleece cover 120 shown for better handling.
Bild 16 zeigt den Plattenresonator als beidseitig wirksamen Schallabsorber mit einem 2-Massen/Feder-System, wobei die Rückenplatte 2a zwischen Platten 1b und 1c angeordnet ist und auf diesen Platten 1a und 1c auf der jeweils anderen Seite Weichschaumauflagen 101 angebracht sind. Weichschaumauflage, Platte und Rückenplatte 2a sind wieder mittels ganzflächiger Verklebungen miteinander verbunden und bilden eine Sandwich-Struktur. Dieser Schallabsorber kann wieder in ein Vlies 120 eingehüllt und mittels einer Wanne bzw. Umrandung 110 aufgehängt sein. Diese Anordnung kommt für hohe Räume in Frage. Dieser Schallabsorber kann auch in normal hohen Räumen verwendet werden und zum Beispiel als Zwischenwand, Wandelement oder Raumteiler ausgebildet sein. Die Wanne bzw. Umrandung 110 sollte dann von dem Fußboden bzw. einer gegebenenfalls vorhandenen Auflage schalltechnisch entkoppelt sein.Figure 16 shows the plate resonator as a sound absorber effective on both sides with a 2-mass / spring system, the back plate 2a is arranged between plates 1b and 1c is and on these plates 1a and 1c on the other side soft foam pads 101 are attached. Soft foam pad, plate and back plate 2a are again using full-surface bonds bonded together and form a sandwich structure. This sound absorber can again be wrapped in a fleece 120 and by means of a tub or border 110 may be suspended. This arrangement comes in for high rooms Question. This sound absorber can also be used in normal high rooms and For example, be designed as a partition, wall element or room divider. The Tray or border 110 should then be off the floor or one if necessary existing edition be acoustically decoupled.
Der Plattenresonator arbeitet aber nicht nur als Absorber (Schalldämpfer) sondern auch als Schalldämmung für die darüberliegenden Räume, im Fall von Bild 15, oder die danebenliegenden Räume im Fall dert Anwendung als Wandelement oder Raumteiler. The plate resonator not only works as an absorber (silencer) but also as Soundproofing for the rooms above, in the case of Figure 15, or the ones next to it Rooms in the case of use as a wall element or room divider.
Claims (16)
- Plate resonator for sound absorption with a thin front plate (1) made of metal,
characterised in that
the front plate (1) is excitable at frequencies < 125 Hz into resonance vibrations and in that it has furthermorea rear plate (2) made of an elastomer, for example polyurethane or polyethylene,a full-surface secure connection (3) between the front plate (1) and the rear plate (2), for example by means of a double-sided adhesive tape,an edging, which is closed on all sides by the rear plate (2) and which does not impede the lateral admission of sound into the rear plate. - Plate resonator according to claim 1,
characterised in that
the plate resonator has edge attachments (8, 10, 15) by means of which it is attachable to the ceiling or wall. - Plate resonator according to one of the claims 1 - 2,
characterised in that
the front plate (1) and the rear plate (2) are attached with the edge attachments by screw, adhesive or plug-in connections. - Plate resonator according to one of the claims 1 - 3,
characterised in that
the rear plate (2) is made of a low-inflammable or non-inflammable melamine resin foam with a preferred density of 10 kg/m3 and a thickness of 50 - 500 mm, preferably 100 mm. - Plate resonator according to claim 1,
characterised in that
the front plate (1) is made of steel with a plate thickness of 0.1 - 5 mm. - Plate resonator according to claim 5,
characterised in that
the plate thickness of the front plate (1) is 1 mm. - Plate resonator according to one of the claims 1 - 6,
characterised in that
a flexible foam layer (101) is applied in front of the front plate (1). - Plate resonator according to one of the claims 1 - 7,
characterised in that
a further thin plate (103) made of metal or hard plastic material is applied on the flexible foam layer (101). - Plate resonator according to one of the claims 1 - 8,
characterised in that
a further flexible foam layer (105) is applied on the plate (103). - Plate resonator according to claim 1,
characterised in that
the plate resonator has in addition a covering plate (1a), which is connected by means of a full-surface connection (3a) to the rear plate (2), and a hanging means (18) is provided, by means of which the plate resonator (1, 2, 1a) can be hung from the ceiling (5). - Plate resonator according to claim 10,
characterised in that
the plate resonator is disposed in a trough (110) which can be placed for example on the beam (111). - Plate resonator according to claim 11,
characterised in that
the trough (111) with the plate resonator contained therein is decoupled acoustically from the support surface. - Plate resonator according to one of the claims 1 - 12,
characterised in that
the plate resonator is covered entirely or partly by a bonded fabric covering (120). - Use of the plate resonator according to one of the claims 1 - 13 as a wall element or an element hanging in the room or a room divider.
- Method according to claim 14,
characterised in that
the plate resonator is attached to the wall or ceiling in a detachable manner, for example by means of a Velcro closure. - Use according to claim 14,
characterised in that
the rear plate (2) is attached to the ceiling or wall by an adhesive means (4).
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SI9630467T SI0811097T1 (en) | 1995-02-24 | 1996-02-23 | Plate resonator |
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19506511A DE19506511C2 (en) | 1995-02-24 | 1995-02-24 | Plate resonator |
DE19506511 | 1995-02-24 | ||
PCT/EP1996/000751 WO1996026331A1 (en) | 1995-02-24 | 1996-02-23 | Plate resonator |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0811097A1 EP0811097A1 (en) | 1997-12-10 |
EP0811097B1 true EP0811097B1 (en) | 2002-05-15 |
Family
ID=7754965
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP96905783A Expired - Lifetime EP0811097B1 (en) | 1995-02-24 | 1996-02-23 | Plate resonator |
Country Status (7)
Country | Link |
---|---|
US (1) | US5975238A (en) |
EP (1) | EP0811097B1 (en) |
JP (1) | JPH11509934A (en) |
AT (1) | ATE217665T1 (en) |
DE (2) | DE19506511C2 (en) |
ES (1) | ES2179934T3 (en) |
WO (1) | WO1996026331A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102005002621B3 (en) * | 2005-01-20 | 2006-06-14 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Hermatically sealed sound insulation module has pair or pairs of interconnected curved metal plates forming hollow spaces to provide sound absorbency |
Families Citing this family (37)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19750102A1 (en) | 1997-11-12 | 1999-06-02 | Stankiewicz Gmbh | Gas-flowed line with sound absorption effect |
DE19754107C1 (en) | 1997-12-05 | 1999-02-25 | Fraunhofer Ges Forschung | Sound absorber, for suspension from ceiling |
JP3620570B2 (en) * | 1998-10-14 | 2005-02-16 | 株式会社神戸製鋼所 | Partition panel structure |
NZ334743A (en) * | 1999-03-19 | 2000-11-24 | Robert Lindsay Russell | Acoustic panel, frameword covered on at least one face by a membrane having a computer or electronic printer generated image |
DE19943320A1 (en) * | 1999-09-10 | 2001-03-15 | Hauni Maschinenbau Ag | Arrangement for reducing the noise level on production machines in the tobacco processing industry |
DE10019543C2 (en) * | 2000-04-20 | 2002-03-07 | Fraunhofer Ges Forschung | Supply air |
US6530221B1 (en) * | 2000-09-21 | 2003-03-11 | Siemens Westinghouse Power Corporation | Modular resonators for suppressing combustion instabilities in gas turbine power plants |
DE10051658C1 (en) * | 2000-10-18 | 2002-02-21 | Fraunhofer Ges Forschung | Sound-insulating glass wall has glass panels provided with compound plate resonators and supported within frame via rubber mountings |
FR2840934A1 (en) * | 2002-06-17 | 2003-12-19 | Revac Sa | Acoustic insulation panel, for false ceilings, has a melamine foam slab within a metal trough and closed by a cover, with or without perforations |
AT502046B1 (en) | 2004-08-04 | 2007-01-15 | Zellulosedaemmstoffproduktion | SOUND ABSORBING ELEMENT, METHOD FOR ITS MANUFACTURE AND CELLULOSE SUPPLY DEVICE |
US20060283657A1 (en) * | 2005-06-15 | 2006-12-21 | York International Corporation | Perforated foamed panel for air handling units |
US7530424B1 (en) * | 2005-11-23 | 2009-05-12 | Graber Curtis E | Sonic boom simulator |
US20080029336A1 (en) * | 2006-06-10 | 2008-02-07 | Patrick Sigler | Acoustic panel |
SE0602831L (en) * | 2006-12-28 | 2008-06-29 | B & L Lund Ab | Ways of absorbing sound waves |
JP5326472B2 (en) * | 2007-10-11 | 2013-10-30 | ヤマハ株式会社 | Sound absorption structure |
DE102007000568A1 (en) | 2007-10-24 | 2009-04-30 | Silencesolutions Gmbh | sound absorber |
EP2085962A2 (en) * | 2008-02-01 | 2009-08-05 | Yamaha Corporation | Sound absorbing structure and vehicle component having sound absorbing properties |
JP5402025B2 (en) * | 2008-02-01 | 2014-01-29 | ヤマハ株式会社 | Sound absorption structure and acoustic room |
US20090223738A1 (en) * | 2008-02-22 | 2009-09-10 | Yamaha Corporation | Sound absorbing structure and vehicle component having sound absorption property |
FI122523B (en) | 2008-04-30 | 2012-03-15 | Metso Paper Inc | Low-frequency silencer, a method for manufacturing a low-frequency silencer, and a system for low-frequency silencers, for example, in air-conditioning ducts for paper mills |
GB2461909A (en) * | 2008-07-17 | 2010-01-20 | South Bank Univ Entpr Ltd | Sound absorbing device |
DE102009007891A1 (en) * | 2009-02-07 | 2010-08-12 | Willsingh Wilson | Resonance sound absorber in multilayer design |
US8127889B1 (en) * | 2009-09-15 | 2012-03-06 | The Boeing Company | Noise reduction system for structures |
DE102011105608B4 (en) * | 2011-06-27 | 2020-02-27 | Forschungsgesellschaft für Systemsicherheit und Arbeitsmedizin e.V. (FSA e.V.) | Sound absorber arrangement for a wide frequency range with an edge absorber |
US8684130B1 (en) * | 2012-09-10 | 2014-04-01 | Alstom Technology Ltd. | Damping system for combustor |
US9845598B1 (en) * | 2014-06-23 | 2017-12-19 | Hanson Hsu | Apparatus for improving the acoustics of an interior space, a system incorporating said apparatus and method of using said apparatus |
MX2017010107A (en) | 2015-02-05 | 2017-11-23 | Nat Gypsum Properties Llc | Sound damping wallboard and method of forming a sound damping wallboard. |
US11746534B2 (en) * | 2015-02-05 | 2023-09-05 | Gold Bond Building Products, Llc | Sound damping wallboard and method of constructing a sound damping wallboard |
CN107208425A (en) | 2015-02-11 | 2017-09-26 | 可耐福石膏两合公司 | Dry wall structure for resonance sound-absorbing |
JP6043407B2 (en) * | 2015-02-27 | 2016-12-14 | 富士フイルム株式会社 | Soundproof structure and method for manufacturing soundproof structure |
DE102015104697A1 (en) * | 2015-03-27 | 2016-09-29 | Carcoustics Techconsult Gmbh | Acoustic absorber element and method for its production |
KR101960823B1 (en) | 2017-02-17 | 2019-03-22 | 주식회사 에스아이판 | Sound absorbing structure for anechoic chamber and anechoic chamber including the same |
CN108458467B (en) | 2017-02-17 | 2020-11-10 | S.I.Pan公司 | Separator and muffler including the same |
WO2019167795A1 (en) * | 2018-02-27 | 2019-09-06 | 富士フイルム株式会社 | Soundproof structure |
KR101979378B1 (en) | 2018-06-19 | 2019-05-16 | 주식회사 에스아이판 | Splitter and sound attenuator including the same |
US11559968B2 (en) | 2018-12-06 | 2023-01-24 | Gold Bond Building Products, Llc | Sound damping gypsum board and method of constructing a sound damping gypsum board |
CA3121091A1 (en) | 2020-06-05 | 2021-12-05 | Gold Bond Building Products, Llc | Sound damping gypsum board and method of constructing a sound damping gypsum board |
Family Cites Families (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB510109A (en) * | 1937-08-19 | 1939-07-27 | Standard Telephones Cables Ltd | Improvements relating to the acoustic treatment of rooms or halls |
US3056707A (en) * | 1957-10-28 | 1962-10-02 | Pittsburgh Plate Glass Co | Sound deadener and absorber |
GB1016432A (en) * | 1961-07-14 | 1966-01-12 | Revertex Ltd | A metal panel having a noise-reducing material adhered thereto |
US3215225A (en) * | 1961-11-29 | 1965-11-02 | Korfund Dynamics Corp | Laminated acoustic panels with outer metal layers, fibrous core and viscoelastic damping layer |
US3819010A (en) * | 1972-11-01 | 1974-06-25 | Armstrong Cork Co | Sound-absorbing wedge |
DD157228A1 (en) * | 1981-03-13 | 1982-10-20 | Karlheinz Beyrich | FAIRING ELEMENT FOR SEKUNDAER LAERMREDUZIERUNG |
DE3141366A1 (en) * | 1981-10-17 | 1983-04-28 | SMP Schwingungs-Minderung Produkte GmbH, 4020 Mettmann | Low-noise worktop |
US4468431A (en) * | 1983-11-17 | 1984-08-28 | Iml Corporation | Polyimide composite |
AT390094B (en) * | 1984-11-16 | 1990-03-12 | Austria Metall | SOUND-INSULATING COMPOUND PANEL AND METHOD FOR THEIR PRODUCTION |
DE3504208A1 (en) * | 1985-02-07 | 1986-08-07 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V., 8000 München | MUFFLER BOX |
JPH0739160B2 (en) * | 1991-04-24 | 1995-05-01 | ニチアス株式会社 | Damping material |
DE9400092U1 (en) * | 1994-01-05 | 1994-03-10 | Jung-Akustik GmbH, 45276 Essen | Frequency-variable soundproofing element |
-
1995
- 1995-02-24 DE DE19506511A patent/DE19506511C2/en not_active Revoked
-
1996
- 1996-02-23 ES ES96905783T patent/ES2179934T3/en not_active Expired - Lifetime
- 1996-02-23 AT AT96905783T patent/ATE217665T1/en active
- 1996-02-23 DE DE59609217T patent/DE59609217D1/en not_active Expired - Lifetime
- 1996-02-23 EP EP96905783A patent/EP0811097B1/en not_active Expired - Lifetime
- 1996-02-23 WO PCT/EP1996/000751 patent/WO1996026331A1/en active IP Right Grant
- 1996-02-23 JP JP8525409A patent/JPH11509934A/en active Pending
- 1996-02-23 US US08/894,639 patent/US5975238A/en not_active Expired - Lifetime
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102005002621B3 (en) * | 2005-01-20 | 2006-06-14 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Hermatically sealed sound insulation module has pair or pairs of interconnected curved metal plates forming hollow spaces to provide sound absorbency |
Also Published As
Publication number | Publication date |
---|---|
DE19506511A1 (en) | 1996-08-29 |
ATE217665T1 (en) | 2002-06-15 |
ES2179934T3 (en) | 2003-02-01 |
EP0811097A1 (en) | 1997-12-10 |
DE19506511C2 (en) | 1998-08-27 |
WO1996026331A1 (en) | 1996-08-29 |
JPH11509934A (en) | 1999-08-31 |
US5975238A (en) | 1999-11-02 |
DE59609217D1 (en) | 2002-06-20 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP0811097B1 (en) | Plate resonator | |
DE19754107C1 (en) | Sound absorber, for suspension from ceiling | |
DE4315759C1 (en) | Sound-absorbent glazing for building - comprises perforated plate with small-diameter holes close together | |
EP0750777B1 (en) | Foil sound absorber | |
WO2000014353A1 (en) | Plate-shaped component | |
DE112005002128T5 (en) | Double-wall structure | |
EP1144769A1 (en) | Structured moulded parts for sound absorption | |
AT508797B1 (en) | MODIFIABLE SOUND ABSORPTION ELEMENT | |
AT515271B1 (en) | Sound damping element | |
DE29815723U1 (en) | Low-reflection room for the entire listening area | |
DE102005002621B3 (en) | Hermatically sealed sound insulation module has pair or pairs of interconnected curved metal plates forming hollow spaces to provide sound absorbency | |
DE10213107B4 (en) | Composite panel resonator | |
JP2001081878A (en) | Sound absorbing panel and acoustic panel | |
DE202020002240U1 (en) | Triangular, non-flat, acoustically effective room element as a combined diffuser-absorber element for small and medium-sized rooms | |
EP2098652A2 (en) | Acoustic absorber unit | |
DE202013104545U1 (en) | Device for active and / or passive influencing of room acoustics | |
WO2017198797A1 (en) | Noise control structure and method for producing same | |
EP1024054A2 (en) | Vehicle headliner | |
DE202020004930U1 (en) | Absorber unit, absorbing medium and higher frequencies and breaking the acoustic effect in the edges of rooms through shields, especially for small and medium-sized rooms | |
EP3392423A1 (en) | Device for passive influencing of the acoustics of a room | |
DE10051658C1 (en) | Sound-insulating glass wall has glass panels provided with compound plate resonators and supported within frame via rubber mountings | |
EP2333181B1 (en) | Acoustical component for influencing sound in a room | |
WO2004073350A1 (en) | Device for fitting a space-designing means with a loudspeaker function | |
DE19822840A1 (en) | Sandwich construction building panel with acoustic insulation | |
DE19839975A1 (en) | Structural part with casing of softly bendable material, of type used in air mattress, involves casing filled with sound-absorption material |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
17P | Request for examination filed |
Effective date: 19970807 |
|
AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AT BE CH DE DK ES FR GB GR IE IT LI LU NL PT SE |
|
AX | Request for extension of the european patent |
Free format text: LT PAYMENT 970807;LV PAYMENT 970807;SI PAYMENT 970807 |
|
17Q | First examination report despatched |
Effective date: 19971203 |
|
GRAG | Despatch of communication of intention to grant |
Free format text: ORIGINAL CODE: EPIDOS AGRA |
|
GRAG | Despatch of communication of intention to grant |
Free format text: ORIGINAL CODE: EPIDOS AGRA |
|
GRAH | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOS IGRA |
|
GRAG | Despatch of communication of intention to grant |
Free format text: ORIGINAL CODE: EPIDOS AGRA |
|
GRAG | Despatch of communication of intention to grant |
Free format text: ORIGINAL CODE: EPIDOS AGRA |
|
GRAH | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOS IGRA |
|
GRAG | Despatch of communication of intention to grant |
Free format text: ORIGINAL CODE: EPIDOS AGRA |
|
GRAH | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOS IGRA |
|
GRAH | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOS IGRA |
|
GRAA | (expected) grant |
Free format text: ORIGINAL CODE: 0009210 |
|
AK | Designated contracting states |
Kind code of ref document: B1 Designated state(s): AT BE CH DE DK ES FR GB GR IE IT LI LU NL PT SE |
|
AX | Request for extension of the european patent |
Free format text: LT PAYMENT 19970807;LV PAYMENT 19970807;SI PAYMENT 19970807 |
|
REF | Corresponds to: |
Ref document number: 217665 Country of ref document: AT Date of ref document: 20020615 Kind code of ref document: T |
|
REG | Reference to a national code |
Ref country code: GB Ref legal event code: FG4D Free format text: NOT ENGLISH Ref country code: CH Ref legal event code: EP |
|
REG | Reference to a national code |
Ref country code: CH Ref legal event code: NV Representative=s name: PA ALDO ROEMPLER |
|
REG | Reference to a national code |
Ref country code: IE Ref legal event code: FG4D Free format text: GERMAN |
|
REF | Corresponds to: |
Ref document number: 59609217 Country of ref document: DE Date of ref document: 20020620 |
|
GBT | Gb: translation of ep patent filed (gb section 77(6)(a)/1977) |
Effective date: 20020720 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: SE Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20020815 Ref country code: DK Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20020815 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: PT Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20020816 |
|
ET | Fr: translation filed | ||
LTIE | Lt: invalidation of european patent or patent extension |
Effective date: 20020515 |
|
REG | Reference to a national code |
Ref country code: ES Ref legal event code: FG2A Ref document number: 2179934 Country of ref document: ES Kind code of ref document: T3 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: LU Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20030223 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: SE Payment date: 20030225 Year of fee payment: 8 |
|
PLBE | No opposition filed within time limit |
Free format text: ORIGINAL CODE: 0009261 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT |
|
26N | No opposition filed |
Effective date: 20030218 |
|
REG | Reference to a national code |
Ref country code: CH Ref legal event code: PFA Owner name: FRAUNHOFER-GESELLSCHAFT ZUR FOERDERUNG DER ANGEWA Free format text: FRAUNHOFER-GESELLSCHAFT ZUR FOERDERUNG DER ANGEWANDTEN FORSCHUNG E.V.#LEONRODSTRASSE 54#80636 MUENCHEN (DE) -TRANSFER TO- FRAUNHOFER-GESELLSCHAFT ZUR FOERDERUNG DER ANGEWANDTEN FORSCHUNG E.V.#HANSASTRASSE 27 C#80686 MUENCHEN (DE) |
|
REG | Reference to a national code |
Ref country code: SI Ref legal event code: IF |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: GR Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20020515 |
|
REG | Reference to a national code |
Ref country code: CH Ref legal event code: PCAR Free format text: ALDO ROEMPLER PATENTANWALT;BRENDENWEG 11 POSTFACH 154;9424 RHEINECK (CH) |
|
REG | Reference to a national code |
Ref country code: FR Ref legal event code: PLFP Year of fee payment: 20 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: NL Payment date: 20150223 Year of fee payment: 20 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: DE Payment date: 20150216 Year of fee payment: 20 Ref country code: IE Payment date: 20150217 Year of fee payment: 20 Ref country code: IT Payment date: 20150223 Year of fee payment: 20 Ref country code: CH Payment date: 20150223 Year of fee payment: 20 Ref country code: ES Payment date: 20150223 Year of fee payment: 20 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: FR Payment date: 20150217 Year of fee payment: 20 Ref country code: AT Payment date: 20150218 Year of fee payment: 20 Ref country code: GB Payment date: 20150223 Year of fee payment: 20 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: BE Payment date: 20150216 Year of fee payment: 20 |
|
REG | Reference to a national code |
Ref country code: DE Ref legal event code: R071 Ref document number: 59609217 Country of ref document: DE |
|
REG | Reference to a national code |
Ref country code: NL Ref legal event code: MK Effective date: 20160222 |
|
REG | Reference to a national code |
Ref country code: CH Ref legal event code: PL |
|
REG | Reference to a national code |
Ref country code: GB Ref legal event code: PE20 Expiry date: 20160222 |
|
REG | Reference to a national code |
Ref country code: IE Ref legal event code: MK9A |
|
REG | Reference to a national code |
Ref country code: AT Ref legal event code: MK07 Ref document number: 217665 Country of ref document: AT Kind code of ref document: T Effective date: 20160223 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: IE Free format text: LAPSE BECAUSE OF EXPIRATION OF PROTECTION Effective date: 20160223 Ref country code: GB Free format text: LAPSE BECAUSE OF EXPIRATION OF PROTECTION Effective date: 20160222 |
|
REG | Reference to a national code |
Ref country code: ES Ref legal event code: FD2A Effective date: 20160530 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: ES Free format text: LAPSE BECAUSE OF EXPIRATION OF PROTECTION Effective date: 20160224 |