EP3061271A1 - Système à synthèse de front d'ondes - Google Patents
Système à synthèse de front d'ondesInfo
- Publication number
- EP3061271A1 EP3061271A1 EP14781270.5A EP14781270A EP3061271A1 EP 3061271 A1 EP3061271 A1 EP 3061271A1 EP 14781270 A EP14781270 A EP 14781270A EP 3061271 A1 EP3061271 A1 EP 3061271A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- sound transducers
- sound
- wave field
- reference point
- transducers
- 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.)
- Granted
Links
- 230000015572 biosynthetic process Effects 0.000 title claims abstract description 45
- 238000003786 synthesis reaction Methods 0.000 title claims abstract description 44
- 238000013459 approach Methods 0.000 claims abstract description 16
- 230000005236 sound signal Effects 0.000 claims description 14
- 230000000712 assembly Effects 0.000 claims description 12
- 238000000429 assembly Methods 0.000 claims description 12
- 239000013598 vector Substances 0.000 claims description 12
- 230000000694 effects Effects 0.000 abstract description 9
- 238000013461 design Methods 0.000 abstract description 4
- 238000011161 development Methods 0.000 description 6
- 230000004044 response Effects 0.000 description 6
- 230000008859 change Effects 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 230000008901 benefit Effects 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 2
- 238000004364 calculation method Methods 0.000 description 2
- 230000001419 dependent effect Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 230000013707 sensory perception of sound Effects 0.000 description 2
- IPNDWAYKBVVIBI-UHFFFAOYSA-N 2-hydroxy-3,5-bis(morpholin-4-ium-4-ylmethyl)-7-propan-2-ylcyclohepta-2,4,6-trien-1-one;dichloride Chemical compound [Cl-].[Cl-].C=1C(C[NH+]2CCOCC2)=C(O)C(=O)C(C(C)C)=CC=1C[NH+]1CCOCC1 IPNDWAYKBVVIBI-UHFFFAOYSA-N 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000001850 reproductive effect Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04S—STEREOPHONIC SYSTEMS
- H04S7/00—Indicating arrangements; Control arrangements, e.g. balance control
- H04S7/30—Control circuits for electronic adaptation of the sound field
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R5/00—Stereophonic arrangements
- H04R5/02—Spatial or constructional arrangements of loudspeakers
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04S—STEREOPHONIC SYSTEMS
- H04S3/00—Systems employing more than two channels, e.g. quadraphonic
- H04S3/02—Systems employing more than two channels, e.g. quadraphonic of the matrix type, i.e. in which input signals are combined algebraically, e.g. after having been phase shifted with respect to each other
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R2201/00—Details of transducers, loudspeakers or microphones covered by H04R1/00 but not provided for in any of its subgroups
- H04R2201/40—Details of arrangements for obtaining desired directional characteristic by combining a number of identical transducers covered by H04R1/40 but not provided for in any of its subgroups
- H04R2201/401—2D or 3D arrays of transducers
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04S—STEREOPHONIC SYSTEMS
- H04S2420/00—Techniques used stereophonic systems covered by H04S but not provided for in its groups
- H04S2420/13—Application of wave-field synthesis in stereophonic audio systems
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04S—STEREOPHONIC SYSTEMS
- H04S7/00—Indicating arrangements; Control arrangements, e.g. balance control
- H04S7/30—Control circuits for electronic adaptation of the sound field
- H04S7/302—Electronic adaptation of stereophonic sound system to listener position or orientation
Definitions
- the present invention relates to a device of sound transducers according to the principle of wave field synthesis.
- the principle of wave field synthesis realizes the "acoustic curtain." In its range, all the sound sources and also the reflections of these sound sources in the recording room can be physically reconstructed in all three spatial dimensions, thus reproducing in a source-free reproduction area the acoustics of the recording room arise.
- the method of wave field synthesis is therefore usually reduced to a horizontal series of transducers placed around the listener. This also reduces the playback to this horizontal level, correct spatial reproduction is no longer possible.
- the cylindrical propagation of the wavefronts then requires that the acoustics of the playback room must be completely suppressed.
- the object of the invention is therefore to describe a device that is portable for practical reasons and in the computing power in the
- the device of sound transducers according to the principle of
- Wave field synthesis not as a closed unit, as described for example in [6] to execute, but to build decentralized.
- the individual modules are usually executed the same way.
- An enclosing housing may allow a modular design. This has the advantage that the modules are interchangeable and that they only have to be assigned to a position in the coordinate system during the setup process of the system. In addition, they can be preassembled and pre-wired for live PA in groups to ensure a quick setup of the system.
- All audio signals can then be routed in a common line to each module.
- the data for the delay times and levels for each individual transducer can be transmitted very effectively with a serial transmission protocol if the model - based approach of the
- Wave field synthesis is used. All audio channels of the system are then routed to all modules in a data stream.
- the additional amount of data to be transmitted to the modules for the calculation of the signals for each individual transducer in a second data stream is comparatively very small.
- the synthesis of content, ie the audio signals themselves, and form, ie the associated data, is then no longer carried out according to the invention in a central unit, but autonomously in each modular unit. Because of the modular design, no more differentiated data or individual audio signals for each individual transducer must be transmitted.
- the data stream which is fed from the central unit to all modules, only contains the vector of each virtual sound source to be displayed to a single reference point in the system.
- the vector of a in all modules, the same reference point of the relevant module to this common reference point is known, because it results from the edge lengths of the modules or modules and their position within the array of transducers.
- the vectors of each individual transducer are stored to this reference point.
- the vector addition of the reference point of the arrangement of sound transducers for Coordinate origin plus vector of the reference point of the module to the reference point of the arrangement of sound transducers plus vector of the respective sound transducer to the reference point of the module gives the exact position of the respective sound transducer to
- the audio signals are convoluted into the respective impulse responses in a central processing unit, and the output of this convolution is sent to the individual output amplifiers.
- Source positions can follow very quickly the natural location changes of the original sound sources and their first high-sound reflections, so is the representation of
- the modular structure of the wave field synthesis system creates another fundamental advantage. Since the amount of data to be transferred and the computational effort in the central unit is independent of the number of modules or modules connected, the system becomes freely scalable. So not only the usual reduction of the Be easily overcome on the horizontal level of the listener. Even very large acoustic curtains with directional effects down to the bass range and tightly focused concave wavefronts can be realized.
- modules could also be assembled into a physical structure, such as a cube or cuboid, in which virtual sound sources emit to the outside.
- microstructures could be used for a combined reproduction of auditory and visual information.
- FIGS. 1 and 2 The device is shown in FIGS. 1 and 2. It will be explained with reference to these drawings.
- Fig. 1 shows a modular device of sound transducers according to the principle of wave field synthesis (1). With her virtual sound sources (2) are shown, the position of which is given in a coordinate system with respect to the coordinate origin (3).
- the coordinate origin may be at the position of a listener in the playback room, but it may be set arbitrarily. In any case, the vector of a
- Reference point (4) of the device may be known from sound transducers to this coordinate origin. Then the respective reference point in each of the modules (5) in the Device from Schallwandlem given by the placement of the module in the system and the edge length of the modules. In the module, the position of each individual transducer (6) is given to each individual transducer.
- the position of each individual virtual sound source can be determined to each individual transducer by adding the individual vectors.
- FIG. 2 shows that all the audio signals and data are routed to each module. This can be done via separate lines (1) and (2) or all information can also be transmitted via a common protocol to the modules.
- the amount of data is relatively small because only the position of the virtual sources in the coordinate system and their assignment to the audio signals must be transmitted. This allows an update of the positions in very short time intervals.
- the signals of all input sources delayed and added up from all according to the module position in the arrangement of sound transducers of all input sources can be fed to the corresponding power amplifier for the few transducers in the module.
- the audio signal will appear on the playback page in a renderer for each
- the starting points of the elementary waves should be close together.
- the virtual sound sources can only arise in the area of the arrangement of sound transducers. Therefore, their number becomes very large when a two-dimensional sound transducer surface is built up.
- the requirements for the renderer prior art systems increase, the control of a large number of transducers requires a high computational effort.
- the principle of wave field synthesis was therefore usually reduced to a horizontal transducer array.
- the wave field synthesis is usually on the listener's horizontal plane is reduced, the third dimension is lost in the reproduction of the sound events.
- the necessary computing power can be distributed decentrally, because the amount of data to be transmitted between the subsystems does not increase with the number of sound transducers.
- the system becomes freely scalable.
- Wavefronts from the audio signals and the associated data for the individual transducers contained within the respective assembly wherein the geometric position of a reference point within the coordinate system for the model-based approach of wave field synthesis for each individual assembly by their placement in the arrangement of Schaliwandmod and the Edge length of the individual modules is determined and the position of each transducer in this
- Coordinate system is defined by its arrangement to this reference point of the assembly, so that solely from the arrangement of the assemblies in the arrangement
- Sound transducers can determine the position of each individual transducer in the coordinate system from the vector addition to the respective higher reference point.
- the assemblies are enclosed by a module housing or are formed of equal size segments in a structure of components.
- the arrangement of transducers is freely scalable in size because the computing power in the central unit does not increase with the number of transducers in the system.
- all the audio signals and the data for the synthesis of the wavefronts are fed to all assemblies of the device, wherein in each assembly, the data are processed, resulting from the position of the respective assembly within the array of sound transducers.
- the position of the individual transducers within an assembly is stored relative to a fixed reference point of the assembly in the assembly.
- the position of a fixed reference point of each module is determined to the position of a reference point of the device from sound transducers by informing the module at which position it is installed within the device of sound transducers and they are stored therefrom with the aid of Dimensions of the individual modules, which can also be designed as a module, the position of their reference point to the central reference point of the device
- the modules are different density with
- the assemblies can be constructed in a closed plane, closed row.
- the assemblies can also be constructed so that they are not arranged in a closed plane or closed row.
- the sound transducers are associated with sub-surfaces, which can form a body that can radiate the wavefronts in a common system in different directions.
- a system for image reproduction is applied to the same carrier system that carries the sound transducer.
- the modules or modules are combined in pre-assembled units. This allows a faster setup of the system.
- a decentralized device constructed from acoustic transducers according to the principle of wave field synthesis on multiple modules, each having a plurality of sound transducers and an assembly control,
- each module controller is arranged to generate drive signals for the sound transducers of its assembly of audio signals and associated data for the form for the synthesis of the wavefronts.
- This structure also enables a system for image reproduction to be applied to a support system carrying the sound transducers.
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Algebra (AREA)
- General Physics & Mathematics (AREA)
- Mathematical Analysis (AREA)
- Mathematical Optimization (AREA)
- Mathematical Physics (AREA)
- Pure & Applied Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Stereophonic System (AREA)
- Circuit For Audible Band Transducer (AREA)
- Obtaining Desirable Characteristics In Audible-Bandwidth Transducers (AREA)
Abstract
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PL14781270T PL3061271T3 (pl) | 2013-08-10 | 2014-09-12 | Układ syntezy pola falowego |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102013013377.7A DE102013013377A1 (de) | 2013-08-10 | 2013-08-10 | Dezentraler Aufbau eines Wellenfeldsynthese Systems |
PCT/IB2014/001806 WO2015036845A1 (fr) | 2013-08-10 | 2014-09-12 | Système à synthèse de front d'ondes |
Publications (2)
Publication Number | Publication Date |
---|---|
EP3061271A1 true EP3061271A1 (fr) | 2016-08-31 |
EP3061271B1 EP3061271B1 (fr) | 2018-04-04 |
Family
ID=51662155
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP14781270.5A Active EP3061271B1 (fr) | 2013-08-10 | 2014-09-12 | Système de synthèse de champ d'ondes |
Country Status (7)
Country | Link |
---|---|
US (1) | US9716961B2 (fr) |
EP (1) | EP3061271B1 (fr) |
DE (2) | DE102013013377A1 (fr) |
ES (1) | ES2674771T3 (fr) |
PL (1) | PL3061271T3 (fr) |
TR (1) | TR201808776T4 (fr) |
WO (1) | WO2015036845A1 (fr) |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP6979665B2 (ja) | 2018-08-31 | 2021-12-15 | 株式会社ドリーム | 指向性制御システム |
CN111322978B (zh) * | 2019-11-08 | 2021-02-02 | 北京航空航天大学 | 一种非理想平面装配偏差的计算方法 |
DE102020203659A1 (de) | 2020-03-20 | 2021-09-23 | Holoplot Gmbh | Schallwandler-Anordnung und Verfahren zum Betrieb einer Schallwandler-Anordnung |
IT202000009928A1 (it) | 2020-05-05 | 2021-11-05 | Powersoft S P A | Apparato per l’amplificazione acustica |
DE102021207302A1 (de) | 2021-07-09 | 2023-01-12 | Holoplot Gmbh | Verfahren und Vorrichtung zur Beschallung mindestens eines Publikumsbereiches |
CN113965842A (zh) * | 2021-12-01 | 2022-01-21 | 费迪曼逊多媒体科技(上海)有限公司 | 一种基于wfs波场合成技术的可变声学家庭影院音响*** |
DE102022129642A1 (de) | 2022-11-09 | 2024-05-16 | Holoplot Gmbh | Verfahren zur richtungsabhängigen Korrektur des Frequenzganges von Schallwellenfronten |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
IL102370A (en) | 1992-06-30 | 1995-03-30 | Yissum Res Dev Co | Process for modifying particulate solids and particulate solids prepared thereby |
NL9401860A (nl) * | 1994-11-08 | 1996-06-03 | Duran Bv | Luidsprekersysteem met bestuurde richtinggevoeligheid. |
DE10319708A1 (de) | 2003-05-02 | 2004-11-25 | Tu Bergakademie Freiberg | Alkalihaltige Gläser mit modifizierten Glasoberflächen und Verfahren zu ihrer Herstellung |
DE102004002532A1 (de) | 2004-01-17 | 2005-09-22 | Helmut Oellers | Frontalmatrix-Wellenfeldsynthese (FMWFS) |
DE102005008366A1 (de) * | 2005-02-23 | 2006-08-24 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Vorrichtung und Verfahren zum Ansteuern einer Wellenfeldsynthese-Renderer-Einrichtung mit Audioobjekten |
DE102009010278B4 (de) * | 2009-02-16 | 2018-12-20 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Lautsprecher |
CN104822036B (zh) * | 2010-03-23 | 2018-03-30 | 杜比实验室特许公司 | 用于局域化感知音频的技术 |
-
2013
- 2013-08-10 DE DE102013013377.7A patent/DE102013013377A1/de not_active Ceased
-
2014
- 2014-09-12 EP EP14781270.5A patent/EP3061271B1/fr active Active
- 2014-09-12 PL PL14781270T patent/PL3061271T3/pl unknown
- 2014-09-12 DE DE112014003702.8T patent/DE112014003702A5/de not_active Withdrawn
- 2014-09-12 TR TR2018/08776T patent/TR201808776T4/tr unknown
- 2014-09-12 US US14/911,388 patent/US9716961B2/en active Active
- 2014-09-12 WO PCT/IB2014/001806 patent/WO2015036845A1/fr active Application Filing
- 2014-09-12 ES ES14781270.5T patent/ES2674771T3/es active Active
Also Published As
Publication number | Publication date |
---|---|
WO2015036845A1 (fr) | 2015-03-19 |
PL3061271T3 (pl) | 2018-10-31 |
DE102013013377A1 (de) | 2015-02-12 |
EP3061271B1 (fr) | 2018-04-04 |
DE112014003702A5 (de) | 2016-04-28 |
US9716961B2 (en) | 2017-07-25 |
US20160192103A1 (en) | 2016-06-30 |
TR201808776T4 (tr) | 2018-07-23 |
ES2674771T3 (es) | 2018-07-03 |
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