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1. 发明申请

WO2022106626A1 METHOD FOR DETERMINING A SOUND FIELD 审中-公开
公开(公告)号：WO2022106626A1
公开(公告)日：2022-05-27
申请号：PCT/EP2021/082316
申请日：2021-11-19
申请人： FRAUNHOFER-GESELLSCHAFT ZUR FÖRDERUNG DER ANGEWANDTEN FORSCHUNG E.V. , FRIEDRICH-ALEXANDER-UNIVERSITAET ERLANGEN-NUERNBERG
发明人： WALTHER, Andreas , PRINN, Albert , HABETS, Emanuel , EL BABA, Youssef
IPC分类号： H04S7/00 , G01H7/00 , H04R29/00
摘要： Method for determining a sound field in an enclosed space or at a target position (TP) within the enclosed space, the method comprises the following steps: performing an acoustic measurement at at least one measurement position within the enclosed space or at a single one measurement position within the enclosed space to obtain an interim value set; estimating a surface impedance as first parameter describing the enclosed space based on the interim value set; determining a model of the enclosed space based on the first parameter; and estimating a sound field throughout the enclosed space based on the model of the enclosed space, the sound field describing a sound characteristic for a plurality of positions within the enclosed space.

2. 发明申请

WO2019012133A1 CONCEPT FOR GENERATING AN ENHANCED SOUND-FIELD DESCRIPTION OR A MODIFIED SOUND FIELD DESCRIPTION USING A MULTI-LAYER DESCRIPTION 审中-公开
公开(公告)号：WO2019012133A1
公开(公告)日：2019-01-17
申请号：PCT/EP2018/069145
申请日：2018-07-13
申请人： FRAUNHOFER-GESELLSCHAFT ZUR FÖRDERUNG DER ANGEWANDTEN FORSCHUNG E.V. , FRIEDRICH-ALEXANDER-UNIVERSITAET ERLANGEN-NUERNBERG
发明人： HERRE, Jürgen , HABETS, Emanuel
IPC分类号： G10L19/008 , H04S7/00 , G06F3/01 , G10L21/0272
摘要： An apparatus for generating an enhanced sound field description comprises: a sound field generator (100) for generating at least two sound field layer descriptions indicating sound fields with respect to at least one reference location; and a meta data generator (110) for generating meta data relating to spatial information of the sound fields, wherein the sound field descriptions and the meta data constitute the enhanced sound field description. The meta data can be a geometrical information for each layer such as a representative distance to the reference location.

3. 发明申请

WO2018193028A1 APPARATUS AND METHOD FOR MULTICHANNEL INTERFERENCE CANCELLATION 审中-公开
公开(公告)号：WO2018193028A1
公开(公告)日：2018-10-25
申请号：PCT/EP2018/060006
申请日：2018-04-19
申请人： FRAUNHOFER-GESELLSCHAFT ZUR FÖRDERUNG DER ANGEWANDTEN FORSCHUNG E.V. , FRIEDRICH-ALEXANDER-UNIVERSITAET ERLANGEN-NUERNBERG
发明人： LUIS VALERO, Maria , HABETS, Emanuel , ANNIBALE, Paolo , LOMBARD, Anthony , WILD, Moritz , RUTHA, Marcel
IPC分类号： H04R3/02 , H04M9/08
摘要： An apparatus for multichannel interference cancellation in a received audio signal comprising two or more received audio channels to obtain a modified audio signal comprising two or more modified audio channels is provided. The apparatus comprises a first filter unit (112) being configured to generate a first estimation of a first interference signal depending on a reference signal. Moreover, the apparatus comprises a first interference canceller (114) being configured to generate a first modified audio channel of the two or more modified audio channels from a first received audio channel of the two or more received audio channels depending on the first estimation of the first interference signal. Furthermore, the apparatus comprises a second filter unit (122) being configured to generate a second estimation of a second interference signal depending on the first estimation of the first interference signal. Moreover, the apparatus comprises a second interference canceller (124) being configured to generate a second modified audio channel of the two or more modified audio channels from a second received audio channel of the two or more received audio channels depending on the second estimation of the second interference signal.

4. 发明申请

WO2016156237A1 APPARATUS AND METHOD FOR PROCESSING STEREO SIGNALS FOR REPRODUCTION IN CARS TO ACHIEVE INDIVIDUAL THREE-DIMENSIONAL SOUND BY FRONTAL LOUDSPEAKERS 审中-公开
标题翻译：用于处理车辆中的立体声信号的装置和方法，以通过正面扬声器实现个体三维声音
公开(公告)号：WO2016156237A1
公开(公告)日：2016-10-06
申请号：PCT/EP2016/056618
申请日：2016-03-24
申请人： FRAUNHOFER-GESELLSCHAFT ZUR FÖRDERUNG DER ANGEWANDTEN FORSCHUNG E.V. , FRIEDRICH-ALEXANDER-UNIVERSITAET ERLANGEN-NUERNBERG
发明人： HESS, Wolfgang , HELLMUTH, Oliver , VARGA, Stefan , HABETS, Emanuel , PLOGSTIES, Jan , HERRE, Jürgen
IPC分类号： H04S5/00 , H04S5/02
CPC分类号： H04S5/02 , H04R2499/13 , H04S5/005 , H04S2400/01
摘要： Apparatus and method for processing stereo signals for reproduction in cars to achieve individual three-dimensional sound by frontal loudspeakers Embodiments provide a digital processor (100) comprising an ambient portion extractor (102) and a spatial effect processing stage (104). The ambient portion extractor (102) is configured to extract an ambient portion from a multi-channel signal. The spatial effect processing stage (104) is configured to generate a spatial effect signal based on the ambient portion of the multi-channel signal. The digital processor (100) is configured to combine (116) the multi-channel signal or a processed version thereof with the spatial effect signal.
摘要翻译：用于处理用于汽车中再现的立体声信号以通过正面扬声器实现单独的三维声音的装置和方法实施例提供一种包括环境部分提取器（102）和空间效果处理级（104）的数字处理器（100）。环境部分提取器（102）被配置为从多信道信号提取环境部分。空间效果处理级（104）被配置为基于多声道信号的环境部分生成空间效果信号。数字处理器（100）被配置为将多声道信号或其处理版本与空间效果信号组合（116）。

5. 发明申请

WO2021013885A1 ACOUSTIC ECHO CANCELLATION UNIT 审中-公开
公开(公告)号：WO2021013885A1
公开(公告)日：2021-01-28
申请号：PCT/EP2020/070671
申请日：2020-07-22
申请人： FRAUNHOFER-GESELLSCHAFT ZUR FÖRDERUNG DER ANGEWANDTEN FORSCHUNG E.V. , FRIEDRICH-ALEXANDER-UNIVERSITAET ERLANGEN-NUERNBERG
发明人： WILD, Moritz , HABETS, Emanuel , MABANDE, Edwin , MILANO, Guendalina , LUIS VALERO, Maria , GÖTZ, Philipp , WALTHER, Andreas , KÜCH, Fabian
IPC分类号： H04S7/00
摘要： An acoustic echo cancellation unit, comprising: an audio processor configured to receive a multichannel audio signal and comprising: a first stage which is configured to process the multichannel audio signal to obtain a first set of spatial audio components; and a second stage which is configured to process the first set of spatial audio components to obtain a second set of spatial audio components; an echo cancellation processor configured to perform echo cancellation by use of the first set of spatial audio components or a deviated version of the first set of spatial audio components as reference signal.

6. 发明申请

WO2020127329A1 APPARATUS AND METHOD FOR REPRODUCING A SPATIALLY EXTENDED SOUND SOURCE OR APPARATUS AND METHOD FOR GENERATING A BITSTREAM FROM A SPATIALLY EXTENDED SOUND SOURCE 审中-公开
公开(公告)号：WO2020127329A1
公开(公告)日：2020-06-25
申请号：PCT/EP2019/085733
申请日：2019-12-17
申请人： FRAUNHOFER-GESELLSCHAFT ZUR FÖRDERUNG DER ANGEWANDTEN FORSCHUNG E.V. , FRIEDRICH-ALEXANDER-UNIVERSITAET ERLANGEN-NUERNBERG
发明人： HERRE, Jürgen , HABETS, Emanuel , SCHLECHT, Sebastian , ADAMI, Alexander
IPC分类号： H04S7/00
摘要： Apparatus for reproducing a spatially extended sound source having a defined position and geometry in a space, the apparatus comprises an interface (100) for receiving a listener position; a projector (120) for calculating a projection of a two-dimensional or three-dimensional hull associated with the spatially extended sound source onto a projection plane using the listener position, information on the geometry of the spatially extended sound source, and information on the position of the spatially extended sound source; a sound position calculator (140) for calculating positions of at least two sound sources for the spatially extended sound source using the projection plane; and a renderer (160) for rendering the at least two sound sources at the positions to obtain a reproduction of the spatially extended sound source having two or more output signals, wherein the renderer (160) is configured to use different sound signals for the different positions, wherein the different sound signals are associated with the spatially extended sound source.

7. 发明申请

WO2014135235A1 APPARATUS AND METHOD FOR MULTICHANNEL DIRECT-AMBIENT DECOMPOSITION FOR AUDIO SIGNAL PROCESSING 审中-公开
标题翻译：用于音频信号处理的多通道直接分解的装置和方法
公开(公告)号：WO2014135235A1
公开(公告)日：2014-09-12
申请号：PCT/EP2013/072170
申请日：2013-10-23
申请人： FRAUNHOFER-GESELLSCHAFT ZUR FÖRDERUNG DER ANGEWANDTEN FORSCHUNG E.V. , FRIEDRICH-ALEXANDER-UNIVERSITAET ERLANGEN-NUERNBERG
发明人： UHLE, Christian , HABETS, Emanuel , GAMPP, Patrick , KRATZ, Michael
IPC分类号： H04S3/00 , G10L19/008
CPC分类号： G10L19/008 , G10L21/028 , G10L25/18 , G10L25/21 , H04S3/008 , H04S3/02 , H04S2400/01
摘要： An apparatus for generating one or more audio output channel signals depending on two or more audio input channel signals is provided. Each of the two or more audio input channel signals comprises direct signal portions and ambient signal portions. The apparatus comprises a filter determination unit (110) for determining a filter by estimating first power spectral density information and by estimating second power spectral density information. Moreover, the apparatus comprises a signal processor (120) for generating the one or more audio output channel signals by applying the filter on the two or more audio input channel signals. The first power spectral density information indicates power spectral density information on the two or more audio input channel signals, and the second power spectral density information indicates power spectral density information on the ambient signal portions of the two or more audio input channel signals. Or, the first power spectral density information indicates the power spectral density information on the two or more audio input channel signals, and the second power spectral density information indicates power spectral density information on the direct signal portions of the two or more audio input channel signals. Or, the first power spectral density information indicates the power spectral density information on the direct signal portions of the two or more audio input channel signals, and the second power spectral density information indicates the power spectral density information on the ambient signal portions of the two or more audio input channel signals.
摘要翻译：提供一种用于根据两个或多个音频输入通道信号产生一个或多个音频输出通道信号的装置。两个或更多个音频输入通道信号中的每一个包括直接信号部分和环境信号部分。该装置包括滤波器确定单元（110），用于通过估计第一功率谱密度信息和估计第二功率谱密度信息来确定滤波器。此外，该装置包括信号处理器（120），用于通过在两个或多个音频输入通道信号上施加滤波器来产生一个或多个音频输出通道信号。第一功率谱密度信息表示两个或多个音频输入通道信号的功率谱密度信息，第二功率谱密度信息表示两个或多个音频输入通道信号的环境信号部分的功率谱密度信息。或者，第一功率谱密度信息表示两个或更多个音频输入通道信号上的功率谱密度信息，第二功率谱密度信息表示两个或多个音频输入通道信号的直接信号部分的功率谱密度信息。或者，第一功率谱密度信息表示两个或更多个音频输入通道信号的直接信号部分上的功率谱密度信息，第二功率谱密度信息表示两者的环境信号部分的功率谱密度信息或更多音频输入通道信号。

8. 发明申请

WO2021018378A1 APPARATUS, METHOD OR COMPUTER PROGRAM FOR PROCESSING A SOUND FIELD REPRESENTATION IN A SPATIAL TRANSFORM DOMAIN 审中-公开
公开(公告)号：WO2021018378A1
公开(公告)日：2021-02-04
申请号：PCT/EP2019/070373
申请日：2019-07-29
申请人： FRAUNHOFER-GESELLSCHAFT ZUR FÖRDERUNG DER ANGEWANDTEN FORSCHUNG E.V. , FRIEDRICH-ALEXANDER-UNIVERSITAET ERLANGEN-NUERNBERG
发明人： THIERGART, Oliver , NIEDERLEITNER, Alexander , HABETS, Emanuel , WILD, Moritz , PLINGE, Axel , KUNTZ, Achim , BOUTHÉON, Alexandre , MAHNE, Dirk , KÜCH, Fabian
IPC分类号： H04S7/00
摘要： An apparatus for processing a sound field representation related to a defined reference point or a defined listening orientation for the sound field representation, comprises: a sound field processor for processing the sound field representation using a deviation of a target listening position from the defined reference point or of a target listening orientation from the defined listening orientation, so that a processed sound field description is obtained, wherein the processed sound field description, when rendered, provides an impression of the sound field representation at the target listening position being different from the defined reference point or for the target listening orientation being different from the defined listening orientation, or for processing the sound field representation using a spatial filter so that the processed sound field description is obtained, wherein the processed sound field description, when rendered, provides an impression of a spatially filtered sound field description, wherein the sound field processor (1000) is configured to process the sound field representation so that the deviation or the spatial filter (1030) is applied in a spatial transform domain having associated therewith a forward transform rule (1021) and a backward transform rule (1051).

9. 发明申请

WO2019012131A1 CONCEPT FOR GENERATING AN ENHANCED SOUND FIELD DESCRIPTION OR A MODIFIED SOUND FIELD DESCRIPTION USING A MULTI-POINT SOUND FIELD DESCRIPTION 审中-公开
公开(公告)号：WO2019012131A1
公开(公告)日：2019-01-17
申请号：PCT/EP2018/069140
申请日：2018-07-13
申请人： FRAUNHOFER-GESELLSCHAFT ZUR FÖRDERUNG DER ANGEWANDTEN FORSCHUNG E.V. , FRIEDRICH-ALEXANDER-UNIVERSITAET ERLANGEN-NUERNBERG
发明人： HERRE, Jürgen , HABETS, Emanuel
IPC分类号： G10L19/008 , H04S7/00 , G06F3/01 , G10L21/0272
摘要： Apparatus for generating an enhanced sound field description, comprising: a sound field generator (100, 250, 260) for generating at least one sound field description indicating a sound field with respect to at least one reference location; and a meta data generator (110) for generating meta data relating to spatial information of the sound field, wherein the at least one sound field description and the meta data constitute the enhanced sound field description. The at least one sound field description comprises in a certain case a first sound field description related to the at least one reference location and a second sound field description related to a further reference location being different from the reference location, and the meta data relating to the spatial information indicates the reference location and the further reference location or one of both reference locations and a vector extending between both reference locations.

10. 发明申请

WO2017178454A1 APPARATUS AND METHOD FOR PROVIDING INDIVIDUAL SOUND ZONES 审中-公开
标题翻译：提供个人声音区的装置和方法
公开(公告)号：WO2017178454A1
公开(公告)日：2017-10-19
申请号：PCT/EP2017/058611
申请日：2017-04-11
申请人： FRAUNHOFER-GESELLSCHAFT ZUR FÖRDERUNG DER ANGEWANDTEN FORSCHUNG E.V. , FRIEDRICH-ALEXANDER-UNIVERSITAET ERLANGEN-NUERNBERG
发明人： SCHNEIDER, Martin , WETZEL, Stefan , WALTHER, Andreas , UHLE, Christian , HELLMUTH, Oliver , PROKEIN, Peter , HABETS, Emanuel
IPC分类号： H04S7/00
摘要： An apparatus for generating a plurality of loudspeaker signals from two or more audio source signals is provided. Each of the two or more audio source signals shall be reproduced in one or more of two or more sound zones, and at least one of the two or more audio source signals shall not be reproduced in at least one of the two more sound zones. The apparatus comprises an audio preprocessor (110) configured to modify each of two or more initial audio signals to obtain two or more preprocessed audio signals. Moreover, the apparatus comprises a filter (140) configured to generate the plurality of loudspeaker signals depending on the two or more preprocessed audio signals. The audio preprocessor (110) is configured to use the two or more audio source signals as the two or more initial audio signals, or wherein the audio preprocessor (110) is configured to generate for each audio source signal of the two or more audio source signals an initial audio signal of the two more initial audio signals by modifying said audio source signal. Moreover, the audio preprocessor (110) is configured to modify each initial audio signal of the two or more initial audio signals depending on a signal power or a loudness of another initial audio signal of the two or more initial audio signals. The filter (140) is configured to generate the plurality of loudspeaker signals depending on in which of the two or more sound zones the two or more audio source signals shall be reproduced and depending on in which of the two or more sound zones the two or more audio source signals shall not be reproduced.
摘要翻译：提供了一种用于从两个或更多个音频源信号生成多个扬声器信号的装置。两个或更多音频源信号中的每一个应在两个或更多声音区中的一个或更多个中重现，并且两个或更多个音频源信号中的至少一个不得在两个更多声音区中的至少一个中重现。该设备包括被配置为修改两个或更多个初始音频信号中的每一个以获得两个或更多个预处理音频信号的音频预处理器（110）。此外，该装置包括滤波器（140），其被配置为根据两个或更多个预处理的音频信号来生成多个扬声器信号。音频预处理器（110）被配置为使用两个或更多个音频源信号作为两个或更多个初始音频信号，或者其中音频预处理器（110）被配置为针对两个或更多音频源的每个音频源信号通过修改所述音频源信号来发信号通知两个更多初始音频信号中的初始音频信号。此外，音频预处理器（110）被配置为根据两个或更多个初始音频信号中的另一个初始音频信号的信号功率或响度来修改两个或更多个初始音频信号中的每个初始音频信号。滤波器（140）被配置为根据两个或更多个音频源信号将被再现的两个或更多个声音区域中的哪个区域以及根据两个或更多个声音区域中的哪个声音区域来再现两个或更多个声音区域来生成多个扬声器信号不得复制更多音频源信号。

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