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1. 发明申请

WO2022179701A1 APPARATUS AND METHOD FOR RENDERING AUDIO OBJECTS 审中-公开
公开(公告)号：WO2022179701A1
公开(公告)日：2022-09-01
申请号：PCT/EP2021/054853
申请日：2021-02-26
申请人： FRAUNHOFER-GESELLSCHAFT ZUR FÖRDERUNG DER ANGEWANDTEN FORSCHUNG E.V. , FRIEDRICH-ALEXANDER-UNIVERSITAET ERLANGEN-NÜRNBERG
发明人： WALTHER, Andreas , FALLER, Christof , HERRE, Jürgen , SCHMIDT, Markus , BORSS, Christian , KLAPP, Julian , GÖTZ, Philipp
IPC分类号： H04R3/12 , H04S7/00
摘要： A more efficient rendering of audio objects, which allows 3D panning, is achieved by performing the panning into two stages, namely at least one horizontal in-layer panning leading to a first virtual (speaker) position and a second virtual or real (speaker) position, which is vertically offset, and another panning vertically between the two positions. Although acting in such a manner seems to increase the computational complexity, this staged processing increases, in fact, the stability of the rendering and the location of the intended virtual position. Moreover, the staged processing, enables to perform, according to an embodiment, the panning by use of amplitude panning gains only, i.e. phase processing is not necessary, thereby rendering the computational complexity low. Even further, the rendering is flexible with respect to applicability to a variety of loudspeaker setups.

2. 发明申请

WO2023083888A2 APPARATUS AND METHOD FOR RENDERING A VIRTUAL AUDIO SCENE EMPLOYING INFORMATION ON A DEFAULT ACOUSTIC ENVIRONMENT 审中-公开
公开(公告)号：WO2023083888A2
公开(公告)日：2023-05-19
申请号：PCT/EP2022/081326
申请日：2022-11-09
申请人： FRAUNHOFER-GESELLSCHAFT ZUR FÖRDERUNG DER ANGEWANDTEN FORSCHUNG E.V. , FRIEDRICH-ALEXANDER-UNIVERSITAET ERLANGEN-NUERNBERG
发明人： HERRE, Jürgen , MAZMANYAN, Vensan , ADAMI, Alexander , PETERS, Nils , SCHWÄR, Simon , HASSAN, Kahleel Porter , GEIER, Matthias , MATE, Sujeet , ERONEN, Antti , HARJU, Otto
IPC分类号： H04S7/00
摘要： An apparatus (100) for rendering a virtual audio scene according to an embodiment is provided. One or more sound sources are emitting sound in the virtual audio scene. The apparatus (100) comprises an input interface (110) configured for receiving audio information, wherein the audio information comprises audio information for the virtual audio scene. Moreover, the apparatus (100) comprises a renderer (120) configured for generating, depending on the audio information for the virtual audio scene, one or more audio output channels for reproducing the virtual audio scene. If information on a current acoustic environment of the virtual audio scene is not available for the renderer (120), the renderer (120) is configured to generate the one or more audio output channels for reproducing the virtual audio scene depending on information on a default acoustic environment.

3. 发明申请

WO2022248620A1 ENCODING AND DECODING OF ACOUSTIC ENVIRONMENT 审中-公开
公开(公告)号：WO2022248620A1
公开(公告)日：2022-12-01
申请号：PCT/EP2022/064327
申请日：2022-05-25
申请人： FRAUNHOFER-GESELLSCHAFT ZUR FÖRDERUNG DER ANGEWANDTEN FORSCHUNG E.V.
发明人： HERRE, Jürgen , GHIDO, Florin
IPC分类号： G10L19/008
摘要： There are disclosed apparatus and methods for encoding and decoding of acoustic environment. In accordance to an example, there is provided an apparatus for decoding an acoustic environment, the acoustic environment including at least one audio source and at least one audio object, the at least one audio object being represented by a structural-acoustic data which links positional data of polygons with acoustic properties of acoustic materials, wherein the positional data includes, for each polygon, the position of the vertexes, the apparatus comprising: a bitstream reader for reading, from the bitstream, an encoded version of structural-acoustic data and at least one audio stream to be rendered as generated by the at least one audio source in the acoustic environment; an audio source decoding block to decode the at least one an audio stream representing the at least one audio source; a structural-acoustic data decoding block to decode the structural-acoustic data.

4. 发明申请

WO2019068638A1 APPARATUS, METHOD AND COMPUTER PROGRAM FOR ENCODING, DECODING, SCENE PROCESSING AND OTHER PROCEDURES RELATED TO DIRAC BASED SPATIAL AUDIO CODING 审中-公开
公开(公告)号：WO2019068638A1
公开(公告)日：2019-04-11
申请号：PCT/EP2018/076641
申请日：2018-10-01
申请人： FRAUNHOFER-GESELLSCHAFT ZUR FÖRDERUNG DER ANGEWANDTEN FORSCHUNG E.V. , FRIEDRICH-ALEXANDER-UNIVERSITAET ERLANGEN-NUERNBERG
发明人： FUCHS, Guillaume , HERRE, Jürgen , KÜCH, Fabian , DÖHLA, Stefan , MULTRUS, Markus , THIERGART, Oliver , WÜBBOLT, Oliver , GHIDO, Florin , BAYER, Stefan , JÄGERS, Wolfgang
IPC分类号： G10L19/008 , G10L19/16
摘要： An apparatus for generating a description of a combined audio scene, comprises: an input interface (100) for receiving a first description of a first scene in a first format and a second description of a second scene in a second format, wherein the second format is different from the first format; a format converter (120) for converting the first description into a common format and for converting the second description into the common format, when the second format is different from the common format; and a format combiner (140) for combining the first description in the common format and the second description in the common format to obtain the combined audio scene.

5. 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.

6. 发明申请

WO2018177610A1 APPARATUS AND METHOD FOR DETERMINING A PREDETERMINED CHARACTERISTIC RELATED TO AN ARTIFICIAL BANDWIDTH LIMITATION PROCESSING OF AN AUDIO SIGNAL 审中-公开
公开(公告)号：WO2018177610A1
公开(公告)日：2018-10-04
申请号：PCT/EP2018/025081
申请日：2018-03-29
申请人： FRAUNHOFER-GESELLSCHAFT ZUR FÖRDERUNG DER ANGEWANDTEN FORSCHUNG E.V. , FRIEDRICH-ALEXANDER-UNI VERSITÄT ERLANGEN-NÜRNBERG
发明人： GAMPP, Patrick , UHLE, Christian , DISCH, Sascha , KARAMPOURNIOTIS, ANTonios , HAVENSTEIN, Julia , HELLMUTH, Oliver , HERRE, Jürgen , PROKEIN, Peter
IPC分类号： G10L21/038 , G10L25/69
摘要： An apparatus for determining a predetermined characteristic related to an artificial bandwidth limitation processing of an audio signal comprises a slope evaiuator configured for evaluating a slope of a spectrum of the audio signal to obtain a slope evaluation result. The apparatus comprises a frequency evaiuator configured for evaluating a cut-off frequency of the spectrum of the audio signal to obtain a frequency evaluation result, and comprises a processor for providing an information indicating that the audio signal comprises the predetermined characteristic dependent on an evaluation of the slope evaluation result and an evaluation of the frequency evaluation result.

7. 发明申请

WO2018091618A1 APPARATUS AND METHOD FOR DECOMPOSING AN AUDIO SIGNAL USING A VARIABLE THRESHOLD 审中-公开
公开(公告)号：WO2018091618A1
公开(公告)日：2018-05-24
申请号：PCT/EP2017/079520
申请日：2017-11-16
申请人： FRAUNHOFER-GESELLSCHAFT ZUR FÖRDERUNG DER ANGEWANDTEN FORSCHUNG E.V. , FRIEDRICH-ALEXANDER-UNIVERSITAET ERLANGEN-NUERNBERG
发明人： ADAMI, Alexander , HERRE, Jürgen , DISCH, Sascha , GHIDO, Florin
IPC分类号： G10L21/0272
摘要： An apparatus for decomposing an audio signal into a background component signal and a foreground component signal, comprises: a block generator (110) for generating a time sequence of blocks of audio signal values; an audio signal analyzer (120) for determining a characteristic of a current block of the audio signal and for determining a variability of the characteristic within a group of blocks comprising at least two blocks of the sequence of blocks; and a separator (130) for separating the current block into a background portion (140) and a foreground portion (150) wherein the separator (130) is configured to determine (182) a separation threshold based on the variability and to separate the current block into the background component signal (140) and the foreground component signal (150), when the characteristic of the current block is in a predetermined relation to the separation threshold.

8. 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）。

9. 发明申请

WO2015010999A1 APPARATUS AND METHOD FOR REALIZING A SAOC DOWNMIX OF 3D AUDIO CONTENT 审中-公开
标题翻译：用于实现3D音频内容的下降的装置和方法
公开(公告)号：WO2015010999A1
公开(公告)日：2015-01-29
申请号：PCT/EP2014/065290
申请日：2014-07-16
申请人： FRAUNHOFER-GESELLSCHAFT ZUR FÖRDERUNG DER ANGEWANDTEN FORSCHUNG E.V. , FRIEDRICH-ALEXANDER-UNIVERSITÄT ERLANGEN-NÜRNBERG
发明人： DISCH, Sascha , FUCHS, Harald , HELLMUTH, Oliver , HERRE, Jürgen , MURTAZA, Adrian , RIDDERBUSCH, Falko , TERENTIV, Leon , PAULUS, Jouni
IPC分类号： G10L19/008 , H04S3/00
CPC分类号： H04S3/02 , G10L19/008 , H04S3/00 , H04S3/006 , H04S3/008 , H04S7/305 , H04S2400/01 , H04S2400/03 , H04S2400/11 , H04S2400/13 , H04S2420/03
摘要： An apparatus for generating one or more audio output channels is provided. The apparatus comprises a parameter processor (110) for calculating output channel mixing information and a downmix processor (120) for generating the one or more audio output channels. The downmix processor (120) is configured to receive an audio transport signal comprising one or more audio transport channels, wherein two or more audio object signals are mixed within the audio transport signal, and wherein the number of the one or more audio transport channels is smaller than the number of the two or more audio object signals. The audio transport signal depends on a first mixing rule and on a second mixing rule. The first mixing rule indicates how to mix the two or more audio object signals to obtain a plurality of premixed channels. Moreover, the second mixing rule indicates how to mix the plurality of premixed channels to obtain the one or more audio transport channels of the audio transport signal. The parameter processor (110) is configured to receive information on the second mixing rule, wherein the information on the second mixing rule indicates how to mix the plurality of premixed signals such that the one or more audio transport channels are obtained. Moreover, the parameter processor (110) is configured to calculate the output channel mixing information depending on an audio objects number indicating the number of the two or more audio object signals, depending on a premixed channels number indicating the number of the plurality of premixed channels, and depending on the information on the second mixing rule. The downmix processor (120) is configured to generate the one or more audio output channels from the audio transport signal depending on the output channel mixing information.
摘要翻译：提供一种用于产生一个或多个音频输出通道的装置。该装置包括用于计算输出通道混合信息的参数处理器（110）和用于产生一个或多个音频输出通道的下混处理器（120）。下混合处理器（120）被配置为接收包括一个或多个音频传输信道的音频传输信号，其中在音频传输信号内混合两个或更多个音频对象信号，并且其中一个或多个音频传输信道的数目为小于两个或更多个音频对象信号的数量。音频传输信号取决于第一混合规则和第二混合规则。第一混合规则指示如何混合两个或多个音频对象信号以获得多个预混频道。此外，第二混合规则指示如何混合多个预混频道以获得音频传输信号的一个或多个音频传输信道。参数处理器（110）被配置为接收关于第二混合规则的信息，其中关于第二混合规则的信息指示如何混合多个预混合信号，使得获得一个或多个音频传输信道。此外，参数处理器（110）被配置为根据指示多个预混频道的数量的预设频道号，根据指示两个或多个音频对象信号的数量的音频对象号码来计算输出频道混合信息，并且取决于关于第二混合规则的信息。下混合处理器（120）被配置为根据输出信道混合信息从音频传输信号产生一个或多个音频输出信道。

10. 发明申请

WO2015010961A2 APPARATUS AND METHOD FOR MAPPING FIRST AND SECOND INPUT CHANNELS TO AT LEAST ONE OUTPUT CHANNEL 审中-公开
标题翻译：将第一和第二输入通道映射到至少一个输出通道的装置和方法
公开(公告)号：WO2015010961A2
公开(公告)日：2015-01-29
申请号：PCT/EP2014/065153
申请日：2014-07-15
申请人： FRAUNHOFER-GESELLSCHAFT ZUR FÖRDERUNG DER ANGEWANDTEN FORSCHUNG E.V. , FRIEDRICH-ALEXANDER-UNIVERSITAET ERLANGEN-NUERNBERG
发明人： HERRE, Jürgen , KÜCH, Fabian , KRATSCHMER, Michael , KUNTZ, Achim , FALLER, Christoph
IPC分类号： H04S7/00
CPC分类号： H04S7/303 , G10L19/008 , H04R5/02 , H04S3/002 , H04S3/02 , H04S7/30 , H04S7/302 , H04S7/305 , H04S7/308 , H04S2400/01 , H04S2400/03 , H04S2420/03
摘要： An apparatus for mapping a first input channel and a second input channel of an input channel configuration to at least one output channel of an output channel configuration, wherein each input channel and each output channel has a direction in which an associated loudspeaker is located relative to a central listener position, wherein the apparatus is configured to map the first input channel to a first output channel of the output channel configuration. The apparatus is further configured to at least one of a) map the second input channel to the first output channel, comprising processing the second input channel by applying at least one of an equalization filter and a decorrelation filter to the second input channel, and b) despite of the fact that an angle deviation between a direction of the second input channel and a direction of the first output channel is less than an angle deviation between a direction of the second input channel and the second output channel and/or is less than an angle deviation between the direction of the second input channel and the direction of the third output channel, map the second input channel to the second and third output channels by panning between the second and third output channels.
摘要翻译：一种用于将输入通道配置的第一输入通道和第二输入通道映射到输出通道配置的至少一个输出通道的装置，其中每个输入通道和每个输出通道具有相关联的扬声器相对于中央收听者位置，其中所述装置被配置为将所述第一输入信道映射到所述输出信道配置的第一输出信道。所述装置还被配置为a）将所述第二输入信道映射到所述第一输出信道中的至少一个，包括通过将均衡滤波器和解相关滤波器中的至少一个应用于所述第二输入信道来处理所述第二输入信道，以及b ），尽管事实是第二输入通道的方向和第一输出通道的方向之间的角度偏差小于第二输入通道的方向与第二输出通道之间的角度偏差和/或小于第二输入通道的方向与第三输出通道的方向之间的角度偏差，通过在第二和第三输出通道之间进行平移将第二输入通道映射到第二和第三输出通道。

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