EP2373054B1 - Reproduction dans une zone de sonorisation ciblée mobile à l'aide de haut-parleurs virtuels - Google Patents

Reproduction dans une zone de sonorisation ciblée mobile à l'aide de haut-parleurs virtuels Download PDF

Info

Publication number
EP2373054B1
EP2373054B1 EP10155873.2A EP10155873A EP2373054B1 EP 2373054 B1 EP2373054 B1 EP 2373054B1 EP 10155873 A EP10155873 A EP 10155873A EP 2373054 B1 EP2373054 B1 EP 2373054B1
Authority
EP
European Patent Office
Prior art keywords
sound
focused
sound sources
control signals
area
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.)
Active
Application number
EP10155873.2A
Other languages
German (de)
English (en)
Other versions
EP2373054A1 (fr
Inventor
Sascha Spors
Jens Ahrens
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.)
Deutsche Telekom AG
Original Assignee
Deutsche Telekom AG
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.)
Filing date
Publication date
Application filed by Deutsche Telekom AG filed Critical Deutsche Telekom AG
Priority to EP10155873.2A priority Critical patent/EP2373054B1/fr
Publication of EP2373054A1 publication Critical patent/EP2373054A1/fr
Application granted granted Critical
Publication of EP2373054B1 publication Critical patent/EP2373054B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04S—STEREOPHONIC SYSTEMS 
    • H04S3/00—Systems employing more than two channels, e.g. quadraphonic
    • 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
    • H04R1/40—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only by combining a number of identical transducers
    • H04R1/403—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only by combining a number of identical transducers loud-speakers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R3/00—Circuits for transducers, loudspeakers or microphones
    • H04R3/12—Circuits for transducers, loudspeakers or microphones for distributing signals to two or more loudspeakers
    • 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

Definitions

  • the present invention relates to the reproduction of a sound field in a limited area using multiple speakers.
  • stereophonic techniques For generating a spatial sound impression stereophonic techniques can be used. These techniques use two or more loudspeakers to produce a spatial sound impression in natural hearing through level differences and / or differences in propagation time. However, the desired spatial hearing impression arises only within a limited range, the so-called "sweet spot" within the speaker assembly. Furthermore, there are various approaches to tracking or enlargement of the sweet spot in stereophonic playback, as for example in the DE-A-10 125 229 , or the DE-A-10 2005 052 904 are described. In stereo, however, a soundfield is not physically reconstructed, but creates an illusion that sounds very similar to the natural model, but has very different physical properties. Also, with the stereophonic only the impression of a sound source can be taught that has at least the distance to the nearest speakers.
  • the technique of wave field synthesis can be used for the authentic physical reconstruction of a sound field over a wide range.
  • This technique uses a large number of loudspeakers, thereby avoiding the problem that in a sweet spot within the loudspeaker arrangement, the reconstruction of the desired sound field is significantly more accurate than in the rest of the listening area, as occurs, for example, in stereo technology
  • the loudspeaker drive signals for the individual Speakers are calculated analytically. In the practical implementation, however, there are large deviations from the desired sound field over the entire potential listening area.
  • the technique of wave field synthesis is, for example, in the publication of S. Spors, R. Rabenstein and J. Ahrens, "The Theory of Wave Field Synthesis Revisited", in: Proceedings of the 124th Convention of the Audio Engineering Society, May 17-20, Amsterdam, The Netherlands, 2008 described.
  • Wave field synthesis can also be used to generate so-called virtual focused sound sources. This is the physical re-synthesis of a sound source located between the listener and the speakers. Focused sound sources in wave field synthesis and their properties are described, for example, in the publication of S. Spors, H. Wierstorf, N. Geier, and J. Ahrens, "Physical and Perceptual Properties of Focused Sources in Wave Field Synthesis," which are convention papers of the 127th Convention of the Audio Engineering Society, New York, USA, 9 .-12. October 2009 , published.
  • Ambisonics Another known technique for reconstruction of a sound field is called Ambisonics and is for example in the WO 2005/0195954 A2 described.
  • This technique requires circular arrays of loudspeakers, with the loudspeaker signals typically being generated using numerical algorithms.
  • the limitation of the spatial bandwidth of the drive signals necessary in the calculation path causes the reconstruction of the desired sound field in the center of the loudspeaker arrangement to be most accurate. In the center of the loudspeaker arrangement is therefore a sweet spot. With increasing distance from the center of the loudspeaker arrangement, the deviations in the reconstructed sound field become larger.
  • J. Hannemann and KD Donohue "Virtual Sound Source Rendering Using a Multipole Expansion and Method-of-Moments Approach," J.
  • Audio Eng. Soc., Vol. 56, No. 6, June 2008 describes a method related to the Ambisonics method, which makes it possible to choose relatively freely the arrangement of the loudspeakers and the location of the sweet spot. Again, the loudspeaker signals are calculated using numerical and thus very computationally intensive algorithms.
  • the DE 10 2007 032 272 A1 describes a method of simulating headphone reproduction through multiple focused sound sources, wherein in the virtual headset presentation, tolerance to head position changes is enhanced by focusing on the geometrical relationships between speakers, depending on the detected position and orientation of the head Sound sources and ears of the listener in all six degrees of freedom is dynamically calculated.
  • the loudspeaker arrangement for the reconstruction of the sound field should be freely selectable and the desired display area should be freely selectable within or in front of the loudspeaker arrangement.
  • the present invention provides a method and an apparatus for reproducing a sound field in a target sound area by means of a plurality of electroacoustic transducers. It is a basic idea of the present invention to use focused sources as virtual sound sources for the reproduction in the spatially limited target sound area.
  • the focused sources are generated by the electroacoustic transducers.
  • the control of the virtual sound sources is performed according to real speakers in the appropriate position to physically reconstruct a desired sound field within the target sound area, wherein the driving signals for the focused sound sources by wave field synthesis, an Ambisonics or a higher order Ambisonics method are determined.
  • control signals for the virtual focused sound sources are determined, which are arranged on a contour around the target PA range.
  • drive signals are determined for the actually arranged electro-acoustic transducers, by which the virtual sources and the output signals desired by them are generated. These drive signals are supplied to the electroacoustic transducers.
  • the virtual sound sources are closer to the target sound area and / or spatially denser than the electroacoustic transducers. Thereby, the accuracy of the reproduction within the target sounding area can be increased.
  • the result is a sweet spot, so a limited target sound area with improved playback properties.
  • a physical reconstruction of a sound field in a limited area is achieved by means of several loudspeakers or electroacoustic transducers. This can be done by means of a closed, preferably convex arrangement of the electroacoustic transducer. However, it is also a non-closed, for example, linear arrangement of the electro-acoustic transducer possible. Furthermore, the desired display area can be placed dynamically and freely within or in front of the loudspeaker arrangement and thus, for example, adapted dynamically to a listener position.
  • the calculation of the control of the virtual sound sources and the actually existing electroacoustic transducer can be done by various methods, in a particularly efficient manner, for example, with the wave field synthesis.
  • the invention can be advantageously applied to sonicating a moving listener or to sonicating a listener at a fixed position with electro-acoustic transducers disposed on the walls of a room. It is also possible to sonicate several listeners by generating focused sound sources that are arranged on contours surrounding several target PA areas. For this it may be necessary to compensate for the influence of the virtual sound sources among each other.
  • a device for reproducing a sound field in a target PA 3 is shown, with which the inventive method can be technically realized.
  • the electroacoustic transducers 16 are located on a contour 15, which in the in Fig. 1 embodiment shown encloses the potential target PA 3.
  • a closed arrangement is not absolutely necessary;
  • the electroacoustic transducers 16 convert the input electrical signals into sound signals.
  • virtual secondary sources (virtual loudspeakers) 14 are generated by the electroacoustic transducers 16, which in turn are arranged on a contour 13 which surrounds the target sound area 3.
  • These virtual loudspeakers 14 are generated as focused sound sources and driven according to real speakers at their position to produce the desired sound field corresponding to a desired virtual sound source 1 within the area 3.
  • the focused sound sources 14 are preferably arranged spatially denser than the electroacoustic transducers 16, since thereby the accuracy of the reproduction within the sounding area 3 is higher and in this way a "sweet spot" with improved reproduction properties arises.
  • the loudspeaker drive signals 12 for generating the focused sound sources 14 on the contour 13 are generated in a signal processing unit 4.
  • the positions 6 and the orientations 7 of the sound sources 14 are generally required.
  • a signal processing unit 5 is provided, which calculates the drive signals 11 for the virtual loudspeakers 14 within the target sonication area 3.
  • the positions 8 and 9 alignments of the virtual speakers 14 are needed.
  • the method according to the present invention is independent of the method used for resynthesis of the sound field within the target sounding area 3 and regardless of the method used to generate the virtual loudspeakers 14 by the electroacoustic transducers 16 by means of acoustic focusing.
  • the methods of wave field synthesis or ambisonics are suitable for this and can be selected independently of one another according to the requirements.
  • a particularly efficient implementation of the method according to the invention results from the use of wave field synthesis.
  • the signal processing units 4 and 5 can be realized as follows.
  • the driving signals of the virtual focused sound sources 14 corresponding to the positions of the electroacoustic transducers 16 and the virtual speakers 14 are generated.
  • the required electroacoustic transducers 16 are initially selected according to the position of the focused sound sources 14 and their emission direction.
  • a method can be used, as is known from the document of S. Spors, "Extension of Analytical Secondary Source Criterion for Wave Field Synthesis", in: 123rd Audio Engineering Society (AES) Convention, New York, USA, October 2007 is described.
  • the wavefronts converge towards the focal point, ie the position of the focused sound source, and diverge behind it like a point source at the focal point.
  • the direction of the wavefronts is equal to that of a point source in the focal point only in a half-space.
  • This half-space can be controlled according to the invention by appropriate methods, in the wave field synthesis, this is done for example by the selection of the active electroacoustic transducer.
  • the selected active electroacoustic transducer can then, for example, according to the focus operator, as in the thesis of E. Verheijen, "Sound Reproduction by Wave Field Synthesis", Delft University of Technology, 1997 , the input signals of the signal processing unit 4 are weighted and time-delayed.
  • Fig. 2 is shown schematically the arrangement and structure of the signal processing units, with which the electro-acoustic transducer 16 can be controlled.
  • the loudspeaker signals can be obtained by prefiltering in prefilter 18, weighting and delaying the signal from virtual source 10.
  • the output signals of the signal processing unit 5 thus arise by time delay and weighting of the source signal according to the theory of wave field synthesis (see the above-mentioned thesis by E. Verheijen) for the reproduction of virtual point sources and plane waves or other complex sound fields.
  • the signal processing unit 4 it is also possible to proceed for the focused sources in wave field synthesis, but here the delays are negative and the pre-filter 17 has a different characteristic.
  • the efficiency of realization by wave field synthesis lies in the fact that delays and weights of an input signal can be converted very efficiently. Furthermore, the necessary time delays and weights can be obtained by simple formulas from the geometry and the desired source. However, the use of other methods is also possible. Thus, the focused sound sources can be realized not only by the wave field synthesis, but it is also the use of higher order Ambisonics possible, as well as by AJ Berkhout, D. de Vries and P. Vogel, "Acoustic control by wave field synthesis", Journal of the Acoustical Society of America, Volume 93 (5): 2764-2778, May 1993 , is described. Furthermore, a Spectral Division Method (see the above-mentioned publication by S. Spors, R. Rabenstein and J. Ahrens) or the application of modified time reversal focusing approaches is also conceivable.
  • the control of the focused sound sources in addition to the above-described wave field synthesis, which may be model- or data-based, also be done by time and amplitude delay techniques, such as stereophony or VBAP, by Higher-order Ambisonics, a Spectral Division method, for example according to the doctoral thesis of J. Daniel, "Representation of champs acoustics, application à la transmission and reproduction of scenes sonores complexes dans un contexte multimedia", Universite Paris 6, 2001 , or numerical (least-squares) approaches.
  • any combinations of the techniques for the realization and control of the virtual focused sound sources are conceivable.
  • FIGS. 3 to 5 Examples of the sound fields produced by various arrangements of electroacoustic transducers are disclosed in U.S. Pat FIGS. 3 to 5 shown.
  • Fig. 3 a circular listening area is surrounded by 56 electroacoustic transducers.
  • the aim is to reproduce a plane wave.
  • Such a plane wave reproduction is shown in (a) and (b) for a frequency of 1 kHz and 4 kHz, respectively. It can clearly be seen in (b) that artifacts occur due to spatial aliasing. These extend over almost the entire listening area.
  • FIGS. 3 (c) and (d) show the generation of a focused source by wave field synthesis, again for a frequency of 1 kHz and 4 kHz, respectively.
  • (d) shows that there is an area around the focused source that is almost free of artifacts. This can be exploited in the process according to the present invention.
  • Fig. 3 (e) shows the reproduction using the method according to the present invention.
  • Fig. 3 (e) It is shown that from the 56 electroacoustic transducers 56 are generated focused sources which are arranged circularly with a diameter of 40 cm around the center and which are driven for the reproduction of a 4 kHz level wave according to the method according to the invention. It is clear that resynthesis takes place without artifacts within the target sonication range.
  • Fig. 3 (f) the same scenario is shown, except that the target PA was moved here. Again, it is clear that resynthesis occurs without significant artifacts.
  • FIGS. 4 (a) and (b) shown Sound fields similar to those in Fig. 3 (e) and (f) are shown in FIGS. 4 (a) and (b) shown, except that instead of the circular arrangement of the electro-acoustic transducer, a rectangular arrangement is used. Such an arrangement is typically used in practical systems.
  • Fig. 4 (a) the reproduction of a plane wave with 4 kHz and a (circular) target PA in the middle
  • Fig. 4 (b) the situation in which the target PA is shifted. Again, it is shown that the resynthesis takes place without significant artifacts.
  • FIGS. 5 (a) and (b) considered a linear speaker assembly, as used in part in practical systems.
  • corresponding Fig. 3 and 4 also shows the Fig. 5 the reproduction of a plane wave with 4 kHz, wherein in (a) the target sound area is located in the middle.
  • Fig. 5 (b) is changed from (a) the angle of incidence of the plane wave in the target sound area.

Landscapes

  • Health & Medical Sciences (AREA)
  • Otolaryngology (AREA)
  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • General Health & Medical Sciences (AREA)
  • Circuit For Audible Band Transducer (AREA)

Claims (11)

  1. Procédé servant à reproduire un champ sonore dans une zone de sonorisation ciblée (3) au moyen de plusieurs convertisseurs (16) électroacoustiques, comprenant les étapes suivantes consistant à :
    - déterminer des signaux de commande (11) pour plusieurs sources sonores (14) virtuelles focalisées disposées sur un contour (13) entourant la zone de sonorisation ciblée (3), servant à reproduire le champ sonore dans la zone de sonorisation ciblée (3) de sorte que le champ sonore est physiquement reconstruit dans la zone de sonorisation ciblée (3), dans lequel les signaux de commande (11) pour les sources sonores (14) focalisées sont déterminés par une synthèse de champ d'ondes, par un procédé ambisonique ou par un procédé ambisonique d'ordre supérieur ;
    - déterminer des signaux de commande (12) pour les convertisseurs (16) électroacoustiques servant à générer les sources sonores (14) focalisées et servant à commander les sources sonores (14) focalisées avec les signaux de commande (11) pour les sources sonores (14) focalisées ;
    - amener les signaux de commande (12) aux convertisseurs (16) électroacoustiques.
  2. Procédé selon la revendication 1, dans lequel les signaux de commande (11) pour les sources sonores (14) focalisées sont déterminés sur la base des positions et/ou des orientations des sources sonores (14) focalisées.
  3. Procédé selon la revendication 1 ou 2, dans lequel les signaux de commande (12) pour les convertisseurs (16) électroacoustiques servant à générer les sources sonores (14) focalisées sont déterminés sur la base des positions et/ou des orientations des convertisseurs (16) électroacoustiques et/ou des sources sonores (14) focalisées.
  4. Procédé selon l'une quelconque des revendications précédentes, dans lequel les signaux de commande pour les convertisseurs (16) électroacoustiques servant à générer les sources sonores (14) focalisées sont déterminés par une synthèse de champ d'ondes, par un procédé ambisonique ou un procédé ambisonique d'ordre supérieur, par un procédé de division spectrale ou par une approche modifiée focalisée sur le retournement temporel.
  5. Procédé selon l'une quelconque des revendications précédentes, dans lequel les sources sonores (14) focalisées sont disposées davantage à proximité de la zone de sonorisation ciblée (3) et/ou avec une plus grande concentration spatiale que les convertisseurs (16) électroacoustiques.
  6. Procédé selon l'une quelconque des revendications précédentes, dans lequel la position de la zone de sonorisation ciblée (3) est modifiée dans le temps par une modification temporelle des positions des sources sonores (14) focalisées.
  7. Procédé selon l'une quelconque des revendications précédentes, dans lequel les signaux de commande (11) sont déterminés pour les sources sonores (14) focalisées, qui sont disposées sur des contours (13) entourant plusieurs zones de sonorisation ciblée (3) si bien que le champ sonore est reproduit dans les nombreuses zones de sonorisation ciblée (3).
  8. Dispositif servant à reproduire un champ sonore dans une zone de sonorisation ciblée (3) en particulier par un procédé selon l'une quelconque des revendications précédentes, comprenant plusieurs convertisseurs (16) électroacoustiques,
    une première unité de traitement de signal (5) servant à déterminer des signaux de commande (11) pour plusieurs sources sonores (14) virtuelles focalisées disposées sur un contour (13) entourant la zone de sonorisation ciblée (3), servant à reproduire le champ sonore dans la zone de sonorisation ciblée (3) de sorte que le champ sonore est physiquement reconstruit dans la zone de sonorisation sonore (3), dans lequel les signaux de commande (11) pour les sources sonores (14) focalisées sont déterminés par une synthèse de champ d'ondes, un procédé ambisonique ou un procédé ambisonique d'ordre supérieur, et
    une deuxième unité de traitement de signal (4) servant à déterminer des signaux de commande (12) pour les convertisseurs (16) électroacoustiques servant à générer les sources sonores (14) focalisées et servant à commander les sources sonores (14) focalisées avec les signaux de commande (11) pour les sources sonores (14) focalisées.
  9. Dispositif selon la revendication 8, dans lequel les convertisseurs (16) électroacoustiques sont disposés sur un contour (15) entourant la zone de sonorisation ciblée (3), en particulier sur un cercle ou sur un rectangle.
  10. Dispositif selon la revendication 8, dans lequel les convertisseurs (16) électroacoustiques sont disposés sur un contour ouvert, en particulier une ligne.
  11. Dispositif selon la revendication 8, 9 ou 10, dans lequel les sources sonores (14) focalisées sont disposées davantage à proximité au niveau de la zone de sonorisation ciblée (3) et/ou avec une plus grande concentration spatiale que les convertisseurs (16) électroacoustiques.
EP10155873.2A 2010-03-09 2010-03-09 Reproduction dans une zone de sonorisation ciblée mobile à l'aide de haut-parleurs virtuels Active EP2373054B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP10155873.2A EP2373054B1 (fr) 2010-03-09 2010-03-09 Reproduction dans une zone de sonorisation ciblée mobile à l'aide de haut-parleurs virtuels

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP10155873.2A EP2373054B1 (fr) 2010-03-09 2010-03-09 Reproduction dans une zone de sonorisation ciblée mobile à l'aide de haut-parleurs virtuels

Publications (2)

Publication Number Publication Date
EP2373054A1 EP2373054A1 (fr) 2011-10-05
EP2373054B1 true EP2373054B1 (fr) 2016-08-17

Family

ID=42483441

Family Applications (1)

Application Number Title Priority Date Filing Date
EP10155873.2A Active EP2373054B1 (fr) 2010-03-09 2010-03-09 Reproduction dans une zone de sonorisation ciblée mobile à l'aide de haut-parleurs virtuels

Country Status (1)

Country Link
EP (1) EP2373054B1 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5973058B2 (ja) * 2012-05-07 2016-08-23 ドルビー・インターナショナル・アーベー レイアウト及びフォーマットに依存しない３ｄオーディオ再生のための方法及び装置
US9268522B2 (en) 2012-06-27 2016-02-23 Volkswagen Ag Devices and methods for conveying audio information in vehicles
EP2930958A1 (fr) * 2014-04-07 2015-10-14 Harman Becker Automotive Systems GmbH Génération d'un champ d'ondes sonores
CN106017837B (zh) * 2016-06-30 2018-12-21 北京空间飞行器总体设计部 一种等效声模拟源的模拟方法
CN114422713B (zh) * 2022-03-29 2022-06-24 湖南航天捷诚电子装备有限责任公司 一种图像采集及智能判读处理装置及方法

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10125229A1 (de) 2001-05-22 2002-11-28 Thomson Brandt Gmbh Verfahren und Vorrichtung zur Wiedergabe von Mehrkanaltonsignalen
GB0319438D0 (en) 2003-08-19 2003-09-17 Crp Group Ltd Fairing
DE102005052904A1 (de) 2004-11-04 2006-06-29 Schlenker, Berthold, Dipl.-Ing. System zur Wiedergabe von Audiosignalen
DE102005003431B4 (de) * 2005-01-25 2009-01-15 Institut für Rundfunktechnik GmbH Anordnung zum Wiedergeben von binauralen Signalen (Kunstkopfsignalen) durch mehrere Lautsprecher
DE102007032272B8 (de) * 2007-07-11 2014-12-18 Institut für Rundfunktechnik GmbH Verfahren zur Simulation einer Kopfhörerwiedergabe von Audiosignalen durch mehrere fokussierte Schallquellen
US9066191B2 (en) * 2008-04-09 2015-06-23 Fraunhofer-Gesellschaft Zur Foerderung Der Angewandten Forschung E.V. Apparatus and method for generating filter characteristics

Also Published As

Publication number Publication date
EP2373054A1 (fr) 2011-10-05

Similar Documents

Publication Publication Date Title
US10021507B2 (en) Arrangement and method for reproducing audio data of an acoustic scene
Spors et al. Spatial sound with loudspeakers and its perception: A review of the current state
EP2080411B1 (fr) Dispositif et procédé pour produire un certain nombre de signaux de haut-parleur pour un réseau de haut-parleurs définissant un espace de restitution
JP5439602B2 (ja) 仮想音源に関連するオーディオ信号についてスピーカ設備のスピーカの駆動係数を計算する装置および方法
Spors et al. Physical and perceptual properties of focused virtual sources in wave field synthesis
EP3044972B1 (fr) Dispositif et procédé de décorrélation de signaux de haut-parleurs
EP0880871A1 (fr) Systemes d'enregistrement et de reproduction de sons
De Sena et al. Analysis and design of multichannel systems for perceptual sound field reconstruction
Ahrens et al. Local sound field synthesis by virtual secondary sources
EP2373054B1 (fr) Reproduction dans une zone de sonorisation ciblée mobile à l'aide de haut-parleurs virtuels
DE102005003431B4 (de) Anordnung zum Wiedergeben von binauralen Signalen (Kunstkopfsignalen) durch mehrere Lautsprecher
DE102006010212A1 (de) Vorrichtung und Verfahren zur Simulation von WFS-Systemen und Kompensation von klangbeeinflussenden WFS-Eigenschaften
EP3677053A1 (fr) Système de haut-parleurs pour son ambiophonique avec suppression des bruits directs non souhaités
Chung et al. Sound reproduction method by front loudspeaker array for home theater applications
Geng et al. Movable virtual sound source construction based on wave field synthesis using a linear parametric loudspeaker array
DE102011108788B4 (de) Verfahren zur Verarbeitung eines Audiosignals, Audiowiedergabesystem und Verarbeitungseinheit zur Bearbeitung von Audiosignalen
WO2007110087A1 (fr) Dispositif pour la reproduction de signaux binauraux (signaux de casque d'ecouteur) par plusieurs haut-parleurs
EP2503799A1 (fr) Procédé et système de calcul de fonctions HRTF par synthèse locale virtuelle de champ sonore
Merchel et al. Influence of the frequency dependent directivity of a sound projector on the localization of projected sound
EP2571290B1 (fr) Synthèse de champ sonore locale par l'intermédiaire d'un corps diffusant virtuel
DE102018108852B3 (de) Verfahren zur Beeinflussung einer auditiven Richtungswahrnehmung eines Hörers
DE3233990A1 (de) Verfahren zur beeinflussung der ausdehnung und lage einer phantomschallquelle bei mehrkanaliger lautsprecherwiedergabe
Iwagami et al. Virtual sound source construction based on adaptive crossfade processing with electro-dynamic and parametric loudspeaker arrays
DE102022211769A1 (de) Aufteilen eines sprachsignals in mehrere punktquellen
Brandenburg Perceptual aspects in spatial audio processing

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

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO SE SI SK SM TR

AX Request for extension of the european patent

Extension state: AL BA ME RS

17P Request for examination filed

Effective date: 20120220

17Q First examination report despatched

Effective date: 20130422

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

INTG Intention to grant announced

Effective date: 20160309

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO SE SI SK SM TR

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: DEUTSCHE TELEKOM AG

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

Free format text: NOT ENGLISH

REG Reference to a national code

Ref country code: CH

Ref legal event code: EP

REG Reference to a national code

Ref country code: IE

Ref legal event code: FG4D

Free format text: LANGUAGE OF EP DOCUMENT: GERMAN

REG Reference to a national code

Ref country code: AT

Ref legal event code: REF

Ref document number: 822081

Country of ref document: AT

Kind code of ref document: T

Effective date: 20160915

REG Reference to a national code

Ref country code: DE

Ref legal event code: R096

Ref document number: 502010012198

Country of ref document: DE

REG Reference to a national code

Ref country code: NL

Ref legal event code: MP

Effective date: 20160817

REG Reference to a national code

Ref country code: LT

Ref legal event code: MG4D

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

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: 20160817

Ref country code: NO

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: 20161117

Ref country code: HR

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: 20160817

Ref country code: FI

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: 20160817

Ref country code: NL

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: 20160817

Ref country code: LT

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: 20160817

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 FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20161118

Ref country code: LV

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: 20160817

Ref country code: ES

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: 20160817

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: 20160817

Ref country code: PL

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: 20160817

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: 20161219

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 8

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: RO

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: 20160817

Ref country code: EE

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: 20160817

REG Reference to a national code

Ref country code: DE

Ref legal event code: R097

Ref document number: 502010012198

Country of ref document: DE

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: CZ

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: 20160817

Ref country code: SM

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: 20160817

Ref country code: BG

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: 20161117

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: 20160817

Ref country code: SK

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: 20160817

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: 20170518

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SI

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: 20160817

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MC

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: 20160817

REG Reference to a national code

Ref country code: IE

Ref legal event code: MM4A

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: 20170309

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: CH

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20170331

Ref country code: IE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20170309

Ref country code: LI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20170331

REG Reference to a national code

Ref country code: BE

Ref legal event code: MM

Effective date: 20170331

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 9

REG Reference to a national code

Ref country code: AT

Ref legal event code: MM01

Ref document number: 822081

Country of ref document: AT

Kind code of ref document: T

Effective date: 20170309

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: BE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20170331

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: AT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20170309

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MT

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: 20160817

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: HU

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT; INVALID AB INITIO

Effective date: 20100309

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: CY

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20160817

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MK

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: 20160817

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: TR

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: 20160817

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IS

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: 20161217

PLAA Information modified related to event that no opposition was filed

Free format text: ORIGINAL CODE: 0009299DELT

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

R26N No opposition filed (corrected)

Effective date: 20170518

RIN2 Information on inventor provided after grant (corrected)

Inventor name: SPORS, SASCHA

Inventor name: AHRENS, JENS

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 20231213

Year of fee payment: 15

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20231212

Year of fee payment: 15

Ref country code: GB

Payment date: 20240322

Year of fee payment: 15