EP1635606A1 - Beschallungsanlage mit einstellbarer Richtwirkung - Google Patents

Beschallungsanlage mit einstellbarer Richtwirkung Download PDF

Info

Publication number: EP1635606A1
Authority: EP; European Patent Office
Prior art keywords: flap; degrees; walls; expansion guide; angle
Prior art date: 2004-09-13
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.): Granted

Application number

EP05291876A

Other languages

English (en)

French (fr)

Other versions

EP1635606B1 (de

Inventor

Christian Heil

Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)

L Acoustics SAS

Original Assignee

L Acoustics SAS

Priority date (The priority date 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 date listed.)

2004-09-13

Filing date

2005-09-12

Publication date

2006-03-15

2005-09-12 Application filed by L Acoustics SAS filed Critical L Acoustics SAS

2006-03-15 Publication of EP1635606A1 publication Critical patent/EP1635606A1/de

2010-03-31 Application granted granted Critical

2010-03-31 Publication of EP1635606B1 publication Critical patent/EP1635606B1/de

Status Not-in-force legal-status Critical Current

2025-09-12 Anticipated expiration legal-status Critical

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Classifications

- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R1/00—Details of transducers, loudspeakers or microphones
- H04R1/20—Arrangements for obtaining desired frequency or directional characteristics
- H04R1/32—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only
- H04R1/34—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only by using a single transducer with sound reflecting, diffracting, directing or guiding means
- H04R1/345—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only by using a single transducer with sound reflecting, diffracting, directing or guiding means for loudspeakers

Definitions

the invention relates generally to sound reinforcement techniques.
the invention relates to a sound system at least consisting of a first acoustic chamber equipped with at least one acute sound reproduction section, the acute sound section comprising at least one transducer and a guide for expanding sound. wave, the expansion guide having an inlet and an outlet respectively relatively close and relatively remote from the transducer, this expansion guide receiving at its input the sound waves emanating from the transducer and having, at least in projection in a first plane, a shape flaring from its entrance to its outlet to spread in a solid emission angle the sound waves emerging from this expansion guide.
One of the major problems with the sound system lies in the difficulty of rendering clearly, particularly in a closed space such as a theater, the sounds typically in the range of 300 Hz to 20 kHz, and especially the most acute sounds in the range of 1300 Hz to 20 kHz.
the acute sounds or average frequency have a relatively low wavelength
these sounds are most likely to reflect and recombine by forming multiple interferences and sound delays that alter the quality of the sound reproduced.
the invention which is in this context, aims to provide a sound system for a sound quality significantly higher than existing systems.
the system of the invention is essentially characterized in that the expansion guide of the first enclosure comprises at least a first movable component movable by a movement carried out parallel to the first plane, said solid emitting angle thus having a value that can be adjusted by moving the first flap.
movement carried out parallel to the foreground is meant for example a movement in a circular arc parallel to the first plane and thus producing a rotation of the first component about an axis at least substantially perpendicular to this first plane, or a movement in line segment parallel to the foreground and thus producing a translation of the first component relative to its initial position.
the sound system of the invention may then comprise at least a second acoustic enclosure similar to the first and forming, at least with the first enclosure, a one-dimensional network of sound sources extending in a direction substantially transverse to the first plane, the second enclosure comprising at least a first mobile flap movable independently of the first movable flap of the first enclosure.
second acoustic enclosure similar to the first is meant, in the present description, a second acoustic enclosure possibly strictly identical to the first enclosure but which, without necessarily being, has at least the characteristics which, over time, description, are explicitly attributed to the first speaker as it is described.
direction substantially transverse to the foreground is meant, in the present description, a direction which, without necessarily being strictly perpendicular to the first plane, makes a significant angle with the latter, for example at least 70 degrees.
the sound system thus defined forms a one-dimensional network of sound sources, that is to say a system universally known to those skilled in the art under its Anglo-Saxon name "Line Source Array”.
the section of the acute sounds of each chamber advantageously comprises a waveguide connecting the transducer to the inlet of the expansion guide, this waveguide may have, opposite the inlet of the expansion guide, an output slit-shaped oriented in a direction substantially transverse to the foreground.
the waveguide can be produced according to the teaching of patent EP 0 331 566 or its US equivalent, US 5 163 167.
the expansion guide of each enclosure may also include a second movable component, also movable by a movement made parallel to the foreground, to change the value of the solid emission angle.
the expansion guide of each enclosure is at least partially delimited by walls extending substantially transversely to the foreground and comprising two inlet walls extending from the entrance of this guide two exit walls extending to the outlet of this expansion guide, that the inlet walls form between them a relatively closed first angle, that the exit walls are respectively connected to the walls of the entering into respective connection areas and form between them a second relatively open angle, and that each movable flap is disposed in the solid emission angle at least partially inside the second angle, facing a wall of corresponding output, to selectively adopt a relatively close position or a position relatively remote from the corresponding output wall.
Each enclosure is for example symmetrical with respect to a median plane perpendicular to the first plane, the two inlet walls of the expansion guide of this enclosure being symmetrical to each other with respect to this median plane, and the two output walls of the same expansion guide being equally symmetrical to each other with respect to this median plane.
each flap forms a non-zero angle with the corresponding outlet wall and is movably mounted by translation parallel to the first plane, between a relatively low directivity position, in which this flap is relatively distant from the connection area of the corresponding outlet wall and in which the sound waves emerging from the expansion guide are guided by the wall of corresponding output, and a relatively high directivity position, in which this flap is relatively close to or in support of the zone of connection of the corresponding outlet wall, and in which the sound waves emerging from the expansion guide are guided by this component.
Each flap may in this case have, in the connection zone, a leading edge adopting substantially the same orientation as the inlet wall to which the corresponding outlet wall is connected and resting on this input wall in the relatively high directivity position of this flap.
the first angle is between 35 degrees and 55 degrees, preferably between 42 degrees and 48 degrees
the second angle is between 100 degrees and 140 degrees, preferably between 115 degrees and 125 degrees
each shutter forms with the median plane an angle of between 20 degrees and 40 degrees, preferably between 25 degrees and 35 degrees.
the values of the aforementioned angles can only be strictly measured in the case where the shutters and the walls are flat, and to the extent that the shutters and the walls can very well, locally or globally, not be planes, it is useful to specify here that the values of the aforementioned angles are given by taking into account the general direction that each wall and each shutter adopts, such as this wall and this shutter are seen at the scale of the length of wave corresponding to an average frequency, for example of the order of 1300 Hz.
each chamber comprises at least a first medium frequency sound reproducing section disposed against a first of the two input walls, to the outside of the solid emission angle and at least a first bass sound reproducing section disposed against a first of the two output walls, outside the solid emission angle.
the invention relates to a sound system constituted by one or more loudspeakers such as E1 to E7.
FIGS. 1 and 2 The most striking advantage of the invention is illustrated in FIGS. 1 and 2, in which the system of the invention is represented in the form of a one-dimensional network of sound sources (Line Source Array), such as LSAg or LSAd. , used for the sound of a space appearing in vertical section in FIG.
Line Source Array such as LSAg or LSAd.
Each of the speakers E1 to E7 of each of the networks LSAg and LSAd emits a beam of sound waves, such as SE1g to SE7g for the network LSAg (FIG. 1), or else such as SE1d and SE4d for the respective speakers E1 and E4 of the LSAd network ( Figure 2).
each network can, as shown in Figure 1, be constituted by a slightly curved column formed by stacking speakers E1 to E7, the different sound beams SE1g SE7g having thus selectively emitted to the nearest listeners for the enclosure E1, and the farthest for the enclosure E7.
the solid emission angle of the different beams such as SE1 to SE7 has the same divergence angle for all the beams, this angle of divergence being for example defined as the angle of divergence.
the trace of each beam in the plane P substantially perpendicular to the stacking direction of the speakers E1 to E7.
the need to give the beam SE1g an angle of divergence sufficient to sound the better the nearest audition area of the LSAg network leads to giving for example the SE7g beam an oversized divergence angle, leading to the appearance multiple sound delays of this beam by reflection on the partitions of the auditory space.
the invention an effect of which is illustrated in FIG. 2, makes it possible to solve this problem by proposing speakers provided with an adjustable directivity.
beams SE1g and SE1d for example, a relatively large angle of divergence in order to sound better the closest audition zone of the LSAg and LSAd networks
the other beams for example beams SE4g and SE4d, a relatively weak angle of divergence to sound better at a hearing area further away from LSAg and LSAd networks by avoiding multiple reflections on the partitions of the auditory space, and correlatively concentrating the energy of the sound waves of these other beams, for example SE4g and SE4d, whose path is longer.
each loudspeaker such as E1 is equipped with an acute sound reproduction section 11, that is to say sounds whose frequency is typically at least 1300 Hz.
This section 11 generally comprises a transducer 20, such as a compression chamber motor, a waveguide 21, and a wave expansion guide 3, the waveguide 21 being interposed between the transducer 20 and the expansion guide 3.
a transducer 20 such as a compression chamber motor
a waveguide 21 and a wave expansion guide 3, the waveguide 21 being interposed between the transducer 20 and the expansion guide 3.
This expansion guide 3 has an input 30 relatively close to the output 210 of the waveguide 21 and therefore of the transducer 20, and an output 31 relatively far from the output 210 of the waveguide 21 and thus of the transducer 20.
the expansion guide 3 receives at its input 30 the sound waves emanating from the transducer 20 and transmitted by the waveguide 21.
the guide 21 is for example made in accordance with patents EP 0 331 566 or US 5 163 167 now universally known to those skilled in the art, and has, opposite the inlet 30 of the expansion guide 3, and as output 210, a slot oriented in a direction substantially transverse to the plane P which is constituted in particular by the plane of Figures 3, 4A, 4B, and 7A to 7D.
the expansion guide 3 has meanwhile, in projection in the same plane P, a shape flaring from its inlet 30 to its outlet 31 to spread in a solid emission angle the sound waves emerging from this guide. expansion 3.
the expansion guide 3 of each enclosure such that E1 to E7 comprises at least one movable flap 32g and for example two movable flaps 32g and 32d.
Each movable flap such as 32g or 32d is displaceable by a movement carried out parallel to the plane P, so that the solid angle of emission of the acute and the medium frequency sound waves takes a value that can be adjusted by moving each flap 32g or 32d.
the expansion guide 3 of each enclosure such as E1 to E7 is at least partially delimited by walls such as 33g, 33d, 34g, and 34d (FIG. 3 in particular). which extend substantially transversely to the plane P.
These walls more precisely comprise two inlet walls, 33g and 33d, which extend from the inlet 30 of the expansion guide 3, and two outlet walls, 34g and 34d, which extend up to the outlet 31 of this expansion guide 3, the outlet walls 34g and 34d respectively connecting to the inlet walls 33g and 33d in respective connection areas 35g and 35d.
the inlet walls 33g and 33d form between them a relatively closed angle A1, for example between 35 degrees and 55 degrees, preferably between 42 degrees and 48 degrees, and which may be chosen to be equal to 45 degrees.
the outlet walls 34g and 34d form between them a relatively open angle A2, for example between 100 degrees and 140 degrees, preferably between 115 degrees and 125 degrees, and which can be chosen to be equal to 120 degrees.
each enclosure such that E1 to E7 can be symmetrical with respect to a median plane M perpendicular to the first plane P, of so that the two inlet walls 33g and 33d of the expansion guide 3 of this enclosure are symmetrical to each other with respect to this median plane M, and that the two outlet walls 34g and 34d of this same expansion guide 3 are also symmetrical to each other with respect to this median plane M.
Each movable flap such as 32g or 32d is disposed at least partially within the second angle A2, facing the left exit wall 34g for the left flap 32g, and facing the right exit wall 34d for the flap right 32d, each flap adopting at will a relatively close position or a position relatively remote from the corresponding outlet wall 34g or 34d.
each movable flap such as 32g or 32d permanently forms a non-zero angle with the corresponding outlet wall 34g or 34d and is movably mounted, by a translation parallel to the first plane P, between at least one relatively low directivity position. , in which this flap 32g or 32d is relatively remote from the connection zone 35g or 35d of the corresponding outlet wall 34g or 34d, and a relatively high directivity position, in which this flap 32g or 32d is relatively close to the zone connecting 35g or 35d of the corresponding outlet wall 34g or 34d, or even resting on this area.
Each flap such as 32g or 32d is for example substantially planar and forms with the median plane M an angle A3 of between 20 degrees and 40 degrees, preferably between 25 degrees and 35 degrees, and which can be chosen to be equal to 30 degrees.
each flap such as 32g or 32d, for example consisting of a polycarbonate plate, may have, in the corresponding connection zone 35g or 35d, a leading edge 320 (FIGS. 3 and 6) adopting substantially the same orientation. that the inlet wall 33g or 33d located on the same side as this flap, and resting on this inlet wall 33g or 33d in the relatively high directivity position of this flap 32g or 32d ( Figure 4B).
Each loudspeaker such as E1 to E7 preferably comprises two medium frequency sound reproducing sections 12 and two bass sound reproduction sections 13 disposed outside the solid angle of emission of the sound waves and symmetrically by ratio to the median plane M.
each medium-frequency sound reproducing section 12 consists essentially of a loudspeaker mounted on a wooden panel forming at least part of the input wall, such as 33g or 33d.
each section 13 of bass sound reproduction is for example essentially consisting of a loudspeaker mounted on a wooden panel forming at least a portion of the outlet wall, such as 34g or 34d.
each inlet wall 33g or 33d can be considered physically constituted both by the corresponding wood panel and by the membrane of the corresponding medium frequency loudspeaker, the direction of this input wall being assimilated to that of this wooden panel.
each outlet wall 34g or 34d may be considered physically constituted both by the corresponding wood panel and the corresponding bass sound speaker membrane, the direction of this output wall being comparable to that of this wooden panel.
the flaps 32g and 32d are movable independently of one another, they can not only adopt a symmetrical configuration of high directivity as shown in Figures 4B, 5A and 7A and a symmetrical configuration of low directivity as FIGS. 3, 4A, 5B and 7B, but also a first asymmetrical configuration illustrated in FIGS. 5C and 7C and in which the flap 32d is in the low directivity position while the flap 32g is in the high directivity position, and second asymmetrical configuration illustrated in Figures 5D and 7D and wherein the flap 32g is in the low directivity position while the flap 32d is in the high directivity position.
FIG. 6 illustrates a mechanism that can be used, among many others, to maintain the flaps 32g and 32d and to allow them to move between their positions of low and high directivity.
Such a mechanism comprises for example two mutually parallel slides 4H and 4B, the slide 4H being fixed by its ends on the upper front edges 51H and 52H (FIG. 5D) of the shell or the frame 5 of the enclosure E1, and the slide 4B being fixed by its ends on the lower front edges 51B and 52B ( Figure 5D) of this hull or chassis 5.
Each shutter such as 32g and 32d is furthermore equipped, on its upper and lower edges, with respective slides, such as 61H, 61B, 62H, 62B, rigidly fixed to this flap and holding it in an angular position determined with respect to the plane. going through the slides.
Each of the slides such as 61H, 61B, 62H, 62B, further comprises two pins such as 611H, 612H, 611B, 612B, 621H, 622H, 621B, and 622B, aligned along the length of the slides 4H and 4B.
lugs are engaged and made prisoners in respective slots, such as 41H, 41B, 42H, 42B, which are formed in the slides 4H and 4B, and wherein these lugs are slidably mounted between two extreme positions.

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Health & Medical Sciences (AREA)
Otolaryngology (AREA)
Physics & Mathematics (AREA)
Engineering & Computer Science (AREA)
Acoustics & Sound (AREA)
Signal Processing (AREA)
Obtaining Desirable Characteristics In Audible-Bandwidth Transducers (AREA)
Circuit For Audible Band Transducer (AREA)
Diaphragms For Electromechanical Transducers (AREA)
Electrophonic Musical Instruments (AREA)
Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)

EP05291876A 2004-09-13 2005-09-12 Beschallungsanlage mit einstellbarer Richtwirkung Not-in-force EP1635606B1 (de)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
FR0409688A FR2875367B1 (fr)	2004-09-13	2004-09-13	Systeme de sonorisation directivite reglable

Publications (2)

Publication Number	Publication Date
EP1635606A1 true EP1635606A1 (de)	2006-03-15
EP1635606B1 EP1635606B1 (de)	2010-03-31

Family

ID=34951673

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
EP05291876A Not-in-force EP1635606B1 (de)	2004-09-13	2005-09-12	Beschallungsanlage mit einstellbarer Richtwirkung

Country Status (8)

Country	Link
US (1)	US7751581B2 (de)
EP (1)	EP1635606B1 (de)
AT (1)	ATE463133T1 (de)
DE (1)	DE602005020225D1 (de)
DK (1)	DK1635606T3 (de)
ES (1)	ES2345259T3 (de)
FR (1)	FR2875367B1 (de)
PT (1)	PT1635606E (de)

Cited By (8)

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GB2425436B (en) *	2005-04-21	2007-06-06	Martin Audio Ltd	Acoustic loading device for loudspeakers
DE202007015371U1 (de)	2007-11-03	2009-03-19	Schwarzmüller, Heinz	Lautsprecher
GB2457555A (en) *	2008-02-22	2009-08-26	D & B Audiotechnik Gmbh	Loudspeaker box with a variable radiation characteristic
CN103578461A (zh) *	2012-07-31	2014-02-12	顾康	一种可调角度非对称高频声波控制器
WO2015063377A1 (fr) *	2013-10-30	2015-05-07	L Acoustics	Systeme de sonorisation a directivite reglable ameliore
DE202016008150U1 (de)	2016-12-02	2017-04-21	Harmonic Design Audiotechnik Gmbh	Lautsprecherbox mit mehreren Schallquellen
FR3062233A1 (fr) *	2017-01-24	2018-07-27	L-Acoustics	Systeme de diffusion sonore
US11496850B2 (en)	2017-10-23	2022-11-08	L-Acoustics	Spatial arrangement of sound broadcasting devices

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US7607512B2 (en) *	2005-08-23	2009-10-27	Ronald Paul Harwood	Speaker assembly for a structural pole and a method for mounting same
ES2315086B1 (es) *	2006-03-28	2010-01-08	Triple Onda, S.A.	Caja acustica del tipo line-array, en especial para la sonorizacion de espacios de gran magnitud.
WO2012168849A1 (en) *	2011-06-09	2012-12-13	Koninklijke Philips Electronics N.V.	An audio speaker arrangement
CN103428603B (zh) *	2012-05-16	2016-04-27	顾康	一种可调角度的高频声波导向槽
EP3284268B1 (de) *	2015-04-14	2021-11-10	Meyer Sound Laboratories, Incorporated	Anordnungsfähiger lautsprecher mit konstanter strahlbreite
KR102359269B1 (ko) *	2015-08-18	2022-02-07	삼성전자주식회사	스피커 장치
US9716942B2 (en) *	2015-12-22	2017-07-25	Bose Corporation	Mitigating effects of cavity resonance in speakers
US9712911B2 (en) *	2015-12-22	2017-07-18	Bose Corporation	Conformable adaptors for diffraction slots in speakers
WO2017124067A1 (en) *	2016-01-14	2017-07-20	Harman International Industries, Inc.	Multiple path acoustic wall coupling for surface mounted speakers
EP3563589A4 (de) *	2016-12-30	2020-08-26	Harman International Industries, Incorporated	Akustische hupe für eine akustische anordnung
US10870985B2 (en)	2017-05-03	2020-12-22	Illinois Tool Works Inc.	Concrete slab load transfer and connection apparatus and method of employing same
CN109511049A (zh) *	2018-12-11	2019-03-22	珠海惠威科技有限公司	一种声场辐射可调的音箱
EP3840401B1 (de)	2019-12-16	2023-08-09	Bose Corporation	Anpassungsfähige wellenleiter
USD944770S1 (en) *	2020-04-02	2022-03-01	L-Acoustics	Loudspeaker
USD944771S1 (en) *	2020-04-02	2022-03-01	L-Acoustics	Loudspeaker
BE1028524B1 (nl) *	2020-07-31	2022-02-28	Aed Distrib Nv	Lijnbronluidsprekerinrichting
DE102021104822B4 (de)	2021-03-01	2023-07-06	Rüdiger Lanz	Schallwellenleitsystem (Wave guide) zur Schallwiedergabe bei Lautsprechern
DE102021203632A1 (de) *	2021-04-13	2022-10-13	Kaetel Systems Gmbh	Lautsprecher, Signalprozessor, Verfahren zum Herstellen des Lautsprechers oder Verfahren zum Betreiben des Signalprozessors unter Verwendung einer Dual-Mode-Signalerzeugung mit zwei Schallerzeugern
EP4335116A2 (de) *	2021-05-05	2024-03-13	Sonos Inc.	Wellenleiter für seitenbefeuerte audiowandler
WO2023286026A1 (ru) *	2021-07-16	2023-01-19	БОГУСЛАВСКИЙ, Евгений	Громкоговоритель

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2004
- 2004-09-13 FR FR0409688A patent/FR2875367B1/fr active Active
2005
- 2005-09-12 AT AT05291876T patent/ATE463133T1/de not_active IP Right Cessation
- 2005-09-12 ES ES05291876T patent/ES2345259T3/es active Active
- 2005-09-12 DE DE602005020225T patent/DE602005020225D1/de active Active
- 2005-09-12 PT PT05291876T patent/PT1635606E/pt unknown
- 2005-09-12 DK DK05291876.0T patent/DK1635606T3/da active
- 2005-09-12 EP EP05291876A patent/EP1635606B1/de not_active Not-in-force
- 2005-09-13 US US11/225,384 patent/US7751581B2/en active Active

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GB404937A (en) *	1932-07-14	1934-01-15	William Robertson Millar	Improvements in sound-modifying devices for loud speakers or the like
EP0331566A1 (de)	1988-02-29	1989-09-06	Heil Acoustics	Zylindrischer Akustischer Wellenleiter
US5163167A (en)	1988-02-29	1992-11-10	Heil Acoustics	Sound wave guide
US5020630A (en) *	1989-12-08	1991-06-04	Electro-Voice, Inc.	Loudspeaker and horn therefor
US6394223B1 (en) *	1999-03-12	2002-05-28	Clair Brothers Audio Enterprises, Inc.	Loudspeaker with differential energy distribution in vertical and horizontal planes
US20040131217A1 (en) *	2000-07-31	2004-07-08	Opie Scott M.	Arbitrary coverage angle sound integrator

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
GB2425436B (en) *	2005-04-21	2007-06-06	Martin Audio Ltd	Acoustic loading device for loudspeakers
DE202007015371U1 (de)	2007-11-03	2009-03-19	Schwarzmüller, Heinz	Lautsprecher
GB2457555A (en) *	2008-02-22	2009-08-26	D & B Audiotechnik Gmbh	Loudspeaker box with a variable radiation characteristic
GB2457555B (en) *	2008-02-22	2010-06-16	D & B Audiotechnik Gmbh	Loudspeaker box with a variable radiation characteristic
US8842867B2 (en)	2008-02-22	2014-09-23	D & B Audiotechnik Ag	Loudspeaker box with a variable radiation characteristic
CN103578461A (zh) *	2012-07-31	2014-02-12	顾康	一种可调角度非对称高频声波控制器
WO2015063377A1 (fr) *	2013-10-30	2015-05-07	L Acoustics	Systeme de sonorisation a directivite reglable ameliore
US9762996B2 (en)	2013-10-30	2017-09-12	L-Acoustics	Sound system with improved adjustable directivity
DE202016008150U1 (de)	2016-12-02	2017-04-21	Harmonic Design Audiotechnik Gmbh	Lautsprecherbox mit mehreren Schallquellen
DE102016014391A1 (de)	2016-12-02	2018-06-07	Harmonic Design Audiotechnik Gmbh	Lautsprecherbox mit mehreren Schallquellen
FR3062233A1 (fr) *	2017-01-24	2018-07-27	L-Acoustics	Systeme de diffusion sonore
WO2018138425A1 (fr) *	2017-01-24	2018-08-02	L-Acoustics	Systeme de diffusion sonore
US11006211B2 (en)	2017-01-24	2021-05-11	L-Acoustics	Sound broadcasting system
US11496850B2 (en)	2017-10-23	2022-11-08	L-Acoustics	Spatial arrangement of sound broadcasting devices

Also Published As

Publication number	Publication date
FR2875367B1 (fr)	2006-12-15
PT1635606E (pt)	2010-06-22
DE602005020225D1 (de)	2010-05-12
US7751581B2 (en)	2010-07-06
ES2345259T3 (es)	2010-09-20
US20060062402A1 (en)	2006-03-23
DK1635606T3 (da)	2010-07-19
ATE463133T1 (de)	2010-04-15
EP1635606B1 (de)	2010-03-31
FR2875367A1 (fr)	2006-03-17

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