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31. 发明申请

WO2015144587A1 AUDIO ENCODER DEVICE AND AN AUDIO DECODER DEVICE HAVING EFFICIENT GAIN CODING IN DYNAMIC RANGE CONTROL 审中-公开
标题翻译：音频编码器装置和具有动态范围控制中有效增益编码的音频解码器装置
公开(公告)号：WO2015144587A1
公开(公告)日：2015-10-01
申请号：PCT/EP2015/055945
申请日：2015-03-20
申请人： FRAUNHOFER-GESELLSCHAFT ZUR FÖRDERUNG DER ANGEWANDTEN FORSCHUNG E.V.
发明人： KÜCH, Fabian , UHLE, Christian , KRATSCHMER, Michael , NEUGEBAUER, Bernhard , MEIER, Michael , SCHREINER, Stephan
IPC分类号： G10L19/16 , H03G7/00
CPC分类号： G10L19/167 , G10L19/022 , H03G7/007
摘要： The invention provides an audio encoder device comprising: an audio encoder configured for producing an encoded audio bitstream from an audio signal comprising consecutive audio frames; a dynamic range control encoder configured for producing an encoded dynamic range control bitstream from an dynamic range control sequence corresponding to the audio signal and comprising consecutive dynamic range control frames, wherein each dynamic range control frame of the dynamic range control frames comprises one or more nodes, wherein each node of the one or more nodes comprises gain information for the audio signal and time information indicating to which point in time the gain information corresponds; wherein the dynamic range control encoder is configured in such way that the encoded dynamic range control bitstream comprises for each dynamic range control frame of the dynamic range control frames a corresponding bitstream portion; wherein the dynamic range control encoder is configured for executing a shift procedure, wherein one or more nodes of the nodes of one reference dynamic range control frame of the dynamic range control frames are selected as shifted nodes, wherein a bit representation of each of the one or more shifted nodes of the one reference dynamic range control frame is embedded in the bitstream portion corresponding to the dynamic range control frame subsequent to the one reference dynamic range control frame, wherein a bit representation of each remaining node of the nodes of the one reference dynamic range control frame of the dynamic range control frames is embedded into the bitstream portion corresponding to the one reference dynamic range control frame.
摘要翻译：本发明提供了一种音频编码器装置，包括：音频编码器，被配置为从包括连续音频帧的音频信号产生编码音频比特流; 动态范围控制编码器，被配置为从对应于音频信号的动态范围控制序列产生编码的动态范围控制比特流并且包括连续的动态范围控制帧，其中动态范围控制帧的每个动态范围控制帧包括一个或多个节点其中，所述一个或多个节点的每个节点包括用于所述音频信号的增益信息和指示所述增益信息对应于哪个时间点的时间信息; 其中所述动态范围控制编码器被配置成使得所述编码的动态范围控制比特流包括对于所述动态范围控制帧的每个动态范围控制帧的对应比特流部分; 其中所述动态范围控制编码器被配置为执行移位过程，其中所述动态范围控制帧的一个参考动态范围控制帧的节点中的一个或多个节点被选择为移位节点，其中，所述一个一个参考动态范围控制帧的多个移位节点被嵌入到与一个参考动态范围控制帧之后的动态范围控制帧相对应的比特流部分中，其中一个参考的节点的每个剩余节点的位表示将动态范围控制帧的动态范围控制帧嵌入到与一个参考动态范围控制帧相对应的比特流部分中。

32. 发明申请

WO2023041583A1 APPARATUS AND METHOD FOR NARROWBAND DIRECTION-OF-ARRIVAL ESTIMATION 审中-公开
公开(公告)号：WO2023041583A1
公开(公告)日：2023-03-23
申请号：PCT/EP2022/075532
申请日：2022-09-14
申请人： FRAUNHOFER-GESELLSCHAFT ZUR FÖRDERUNG DER ANGEWANDTEN FORSCHUNG E.V.
发明人： CHAKRABARTY, Soumitro , KEMPAPURA SRINIVASA, Shashi Kumar , KÜCH, Fabian , KROOS, Christian , THIERGART, Oliver
IPC分类号： G10L25/03 , G01S3/808 , G10L25/18 , G10L25/30
摘要： An apparatus for estimating sub-band-specific direction information for two or more sub-bands of a plurality of sub-bands according to an embodiment is provided. The apparatus comprises a feature extractor (110) for obtaining a plurality of feature samples for a plurality of frequency bands of two or more audio signals. Moreover, the apparatus comprises a direction estimator (120) being configured to receive the plurality of feature samples as input values and being configured to output a plurality of output samples wherein the output samples indicate, for each sub-band of the two or more sub-bands, the sub-band-specific direction information for said sub-band. Each of the plurality of sub-bands is equal to one of the plurality of frequency bands or comprises at least one frequency band or a portion of a frequency band of the plurality of frequency bands.

33. 发明申请

WO2022079049A2 APPARATUS AND METHOD FOR ENCODING A PLURALITY OF AUDIO OBJECTS AND APPARATUS AND METHOD FOR DECODING USING TWO OR MORE RELEVANT AUDIO OBJECTS 审中-公开
公开(公告)号：WO2022079049A2
公开(公告)日：2022-04-21
申请号：PCT/EP2021/078217
申请日：2021-10-12
申请人： FRAUNHOFER-GESELLSCHAFT ZUR FÖRDERUNG DER ANGEWANDTEN FORSCHUNG E.V. , FRIEDRICH-ALEXANDER-UNIVERSITAET ERLANGEN-NUERNBERG
发明人： EICHENSEER, Andrea , KORSE, Srikanth , BAYER, Stefan , KÜCH, Fabian , THIERGART, Oliver , FUCHS, Guillaume , WECKBECKER, Dominik , HERRE, Jürgen , MULTRUS, Markus
IPC分类号： G10L19/008
摘要： Apparatus for encoding a plurality of audio objects, comprising: an object parameter calculator (100) configured for calculating, for one or more frequency bins of a plurality of frequency bins related to a time frame, parameter data for at least two relevant audio objects, wherein a number of the at least two relevant audio objects is lower than a total number of the plurality of audio objects, and an output interface (200) for outputting an encoded audio signal comprising information on the parameter data for the at least two relevant audio objects for the one or more frequency bins.

34. 发明申请

WO2020249815A2 PARAMETER ENCODING AND DECODING 审中-公开
公开(公告)号：WO2020249815A2
公开(公告)日：2020-12-17
申请号：PCT/EP2020/066456
申请日：2020-06-15
申请人： FRAUNHOFER-GESELLSCHAFT ZUR FÖRDERUNG DER ANGEWANDTEN FORSCHUNG E.V. , FRIEDRICH-ALEXANDER-UNIVERSITAET ERLANGEN-NUERNBERG
发明人： BOUTHÉON, Alexandre , FUCHS, Guillaume , MULTRUS, Markus , KÜCH, Fabian , THIERGART, Oliver , BAYER, Stefan , DISCH, Sascha , HERRE, Jürgen
IPC分类号： G10L19/008
摘要： There are disclosed several examples of encoding and decoding technique. In particular, an audio synthesizer (300) for generating a synthesis signal (336, 340, y R ) from a downmix signal (246, x), comprises: an input interface (312) for receiving the down mix signal (246, x), the downmix signal (246, x) having a number of downmix channels and side information (228), the side information (228) including channel level and correlation information (314, ξ, χ) of an original signal (212, y), the original signal (212, y) having a number of original channels; and a synthesis processor (404) for generating, according to at least one mixing rule, the synthesis signal (336, 340, y R ) using: channel level and correlation information (220, 314, ξ, χ) of the original signal (212, y); and covariance information (C x ) associated with the downmix signal (324, 246, x).

35. 发明申请

WO2017157803A1 APPARATUS, METHOD OR COMPUTER PROGRAM FOR GENERATING A SOUND FIELD DESCRIPTION 审中-公开
标题翻译：用于产生声场的装置，方法或计算机程序
公开(公告)号：WO2017157803A1
公开(公告)日：2017-09-21
申请号：PCT/EP2017/055719
申请日：2017-03-10
申请人： FRAUNHOFER-GESELLSCHAFT ZUR FÖRDERUNG DER ANGEWANDTEN FORSCHUNG E.V. , FRIEDRICH-ALEXANDER-UNIVERSITÄT ERLANGEN-NÜRNBERG
发明人： HABETS, Emanuel , THIERGART, Oliver , KÜCH, Fabian , NIEDERLEITNER, Alexander , KHAN, Affan-Hasan , MAHNE, Dirk
IPC分类号： H04R3/00
摘要： An apparatus for generating a sound field description having a representation of sound field components, comprises a direction determiner (102) for determining one or more sound directions for each time-frequency tile of a plurality of time-frequency tiles of a plurality of microphone signals; a spatial basis function evaluator (103) for evaluating, for each time-frequency tile of the plurality of time-frequency tiles, one or more spatial basis functions using the one or more sound directions; and a sound field component calculator (201 ) for calculating, for each time-frequency tile of the plurality of time-frequency tiles, one or more sound field components corresponding to the one or more spatial basis functions evaluated using the one or more sound directions and a reference signal for a corresponding time-frequency tile, the reference signal being derived from one or more microphone signals of the plurality of microphone signals.
摘要翻译：用于产生具有声场分量的表示的声场描述的设备包括方向确定器（102），用于确定多个时间 - 频率块中的每个时间 - 频率块的一个或多个声音方向，多个麦克风信号的频率块; 空间基础函数评估器（103），用于针对所述多个时间频率片中的每个时间频率片评估使用所述一个或多个声音方向的一个或多个空间基础函数; 以及声场分量计算器（201），用于针对所述多个时频分片中的每个时频分片，计算与使用所述一个或多个声音方向评估的所述一个或多个空间基函数相对应的一个或多个声场分量以及用于对应的时间频率片的参考信号，所述参考信号是从所述多个麦克风信号中的一个或多个麦克风信号中导出的。

36. 发明申请

WO2016202682A1 LOUDNESS CONTROL FOR USER INTERACTIVITY IN AUDIO CODING SYSTEMS 审中-公开
标题翻译：音频编码系统中用户互动的灵活性控制
公开(公告)号：WO2016202682A1
公开(公告)日：2016-12-22
申请号：PCT/EP2016/063205
申请日：2016-06-09
申请人： FRAUNHOFER-GESELLSCHAFT ZUR FÖRDERUNG DER ANGEWANDTEN FORSCHUNG E.V.
发明人： KÜCH, Fabian , UHLE, Christian , KRATSCHMER, Michael , NEUGEBAUER, Bernhard , MEIER, Michael
IPC分类号： G10L19/008
CPC分类号： G06F3/165 , G06F3/162 , G06F17/10 , G10L19/008 , H04S3/008 , H04S7/30 , H04S2400/13 , H04S2420/11
摘要： An audio processor for processing an audio signal (100), comprises: an audio signal modifier (2) for modifying the audio signal (100) in response to a user input (200); a loudness controller (6) for determining a loudness compensation gain (C) based on a reference loudness (L ref ) or a reference gain (g i ) and a modified loudness (L mod ) or a modified gain (h i ), where the modified loudness (L mod ) or the modified gain (h i ) depends on the user input; and a loudness manipulator (5) for manipulating a loudness of a signal (101) using the loudness compensation gain (C).
摘要翻译：一种用于处理音频信号（100）的音频处理器，包括：用于响应于用户输入（200）修改音频信号（100）的音频信号修改器（2）; 响应控制器（6），用于基于参考响度（Lref）或参考增益（gi）和修改响度（Lmod）或修改增益（hi）来确定响度补偿增益（C），其中改变的响度 Lmod）或修改后的增益（hi）取决于用户输入; 以及用于使用响度补偿增益（C）来操纵信号（101）的响度的响度操纵器（5）。

37. 发明申请

WO2015059087A1 CONCEPT FOR COMBINED DYNAMIC RANGE COMPRESSION AND GUIDED CLIPPING PREVENTION FOR AUDIO DEVICES 审中-公开
标题翻译：组合动态范围压缩和指导音频设备的剪辑预防概念
公开(公告)号：WO2015059087A1
公开(公告)日：2015-04-30
申请号：PCT/EP2014/072431
申请日：2014-10-20
申请人： FRAUNHOFER-GESELLSCHAFT ZUR FÖRDERUNG DER ANGEWANDTEN FORSCHUNG E.V.
发明人： KÜCH, Fabian , UHLE, Christian , KRATSCHMER, Michael , NEUGEBAUER, Bernhard , MEIER, Michael , BORSUM, Arne
IPC分类号： G10L21/034 , H03G9/00 , H03G11/00 , G10L19/16 , G10L19/008
CPC分类号： G10L19/167 , G06F3/165 , G10L19/008 , G10L19/018 , G10L21/034 , H03G9/005 , H03G11/008
摘要： Concept for combined dynamic range compression and guided clipping prevention for audio devices The invention provides a concept for combined dynamic range compression and guided clipping prevention for audio devices. An audio decoder for decoding an audio bitstream and a metadata bitstream related to the audio bitstream according to the concept comprises an audio processing chain configured to receive a decoded audio signal derived from the audio bitstream and to adjust characteristics of the audio signal in order to produce an audio output signal, the audio adjustment chain comprising a plurality of adjustment stages including a dynamic range control stage for adjusting a dynamic range of the audio output signal and a guided clipping prevention stage for preventing clipping of the audio output signal; and a metadata decoder configured to receive the metadata bitstream and to extract dynamic range control gain sequences and guided clipping prevention gain sequences from the metadata bitstream.
摘要翻译：用于音频设备的组合动态范围压缩和引导限幅预防的概念本发明提供了用于音频设备的组合动态范围压缩和引导限幅预防的概念。根据该概念，用于解码音频比特流的音频解码器和与音频比特流相关的元数据比特流包括：音频处理链，被配置为接收从音频比特流导出的解码音频信号，并且调整音频信号的特性以产生音频输出信号，音频调节链包括多个调节级，包括用于调整音频输出信号的动态范围的动态范围控制级和用于防止音频输出信号的限幅的引导限幅预防级; 以及元数据解码器，被配置为接收所述元数据比特流并从所述元数据比特流中提取动态范围控制增益序列和引导限幅预防增益序列。

38. 发明申请

WO2015010998A1 CONCEPT FOR AUDIO ENCODING AND DECODING FOR AUDIO CHANNELS AND AUDIO OBJECTS 审中-公开
标题翻译：音频编码和解码音频通道和音频对象的概念
公开(公告)号：WO2015010998A1
公开(公告)日：2015-01-29
申请号：PCT/EP2014/065289
申请日：2014-07-16
申请人： FRAUNHOFER-GESELLSCHAFT ZUR FÖRDERUNG DER ANGEWANDTEN FORSCHUNG E.V. , FRIEDRICH-ALEXANDER-UNIVERSITAET ERLANGEN-NUERNBERG
发明人： ADAMI, Alexander , BORSS, Christian , DICK, Sascha , ERTEL, Christian , FÜG, Simone , HERRE, Jürgen , HILPERT, Johannes , HÖLZER, Andreas , KRATSCHMER, Michael , KÜCH, Fabian , KUNTZ, Achim , MURTAZA, Adrian , PLOGSTIES, Jan , SILZLE, Andreas , STENZEL, Hanne
IPC分类号： G10L19/008
CPC分类号： G10L19/20 , G10L19/008 , G10L19/028 , G10L19/18 , G10L19/22 , H04S3/008 , H04S2400/03 , H04S2400/11
摘要： Audio encoder for encoding audio input data (101) to obtain audio output data (501) comprises an input interface (100) for receiving a plurality of audio channels, a plurality of audio objects and metadata related to one or more of the plurality of audio objects; a mixer (200) for mixing the plurality of objects and the plurality of channels to obtain a plurality of pre-mixed channels, each pre-mixed channel comprising audio data of a channel and audio data of at least one object; a core encoder (300) for core encoding core encoder input data; and a metadata compressor (400) for compressing the metadata related to the one or more of the plurality of audio objects, wherein the audio encoder is configured to operate in at least one mode of the group of two modes comprising a first mode, in which the core encoder is configured to encode the plurality of audio channels and the plurality of audio objects received by the input interface as core encoder input data, and a second mode, in which the core encoder (300) is configured for receiving, as the core encoder input data, the plurality of pre-mixed channels generated by the mixer (200).
摘要翻译：用于编码音频输入数据（101）以获得音频输出数据（501）的音频编码器包括用于接收多个音频频道的输入接口（100），与多个音频中的一个或多个相关的多个音频对象和元数据对象; 混合器（200），用于混合多个对象和多个通道以获得多个预混合通道，每个预混合通道包括通道的音频数据和至少一个对象的音频数据; 核心编码器（300），用于核心编码核心编码器输入数据; 以及用于压缩与所述多个音频对象中的一个或多个音频对象相关的元数据的元数据压缩器（400），其中，所述音频编码器被配置为在包括第一模式的两种模式的组的至少一种模式中操作，其中核心编码器被配置为将由输入接口接收的多个音频通道和多个音频对象编码为核心编码器输入数据，以及第二模式，其中核心编码器（300）被配置为接收作为核心编码器输入数据，由混合器（200）产生的多个预混频道。

39. 发明申请

WO2013079663A2 APPARATUS AND METHOD FOR MERGING GEOMETRY-BASED SPATIAL AUDIO CODING STREAMS 审中-公开
标题翻译：用于协调基于几何的空间音频编码流的装置和方法
公开(公告)号：WO2013079663A2
公开(公告)日：2013-06-06
申请号：PCT/EP2012/074097
申请日：2012-11-30
申请人： FRAUNHOFER-GESELLSCHAFT ZUR FÖRDERUNG DER ANGEWANDTEN FORSCHUNG E.V. , FRIEDRICH-ALEXANDER-UNIVERSITÄT ERLANGEN-NÜRNBERG
发明人： DEL GALDO, Giovanni , THIERGART, Oliver , HERRE, Jürgen , KÜCH, Fabian , HABETS, Emanuel , CRACIUN, Alexandra , KUNTZ, Achim
CPC分类号： G10L19/008 , G06K9/624 , G10L21/0272 , G10L2021/02166 , H04R5/00 , H04S2420/03 , H04S2420/11
摘要： An apparatus for generating a merged audio data stream is provided. The apparatus comprises a demultiplexer (180) for obtaining a plurality of single-layer audio data streams, wherein the demultiplexer (180) is adapted to receive one or more input audio data streams, wherein each input audio data stream comprises one or more layers, wherein the demultiplexer (180) is adapted to demultiplex each one of the input audio data streams having one or more layers into two or more demultiplexed audio data streams having exactly one layer, such that the two or more demultiplexed audio data streams together comprise the one or more layers of the input audio data stream. Furthermore, the apparatus comprises a merging module (190) for generating the merged audio data stream, having one or more layers, based on the plurality of single-layer audio data streams. Each layer of the input data audio streams, of the demultiplexed audio data streams, of the single-layer data streams and of the merged audio data stream comprises a pressure value of a pressure signal, a position value and a diffuseness value as audio data.
摘要翻译：提供一种用于产生合并的音频数据流的装置。该装置包括用于获得多个单层音频数据流的解复用器（180），其中解复用器（180）适于接收一个或多个输入音频数据流，其中每个输入音频数据流包括一个或多个层，其中解复用器（180）适于将具有一个或多个层的输入音频数据流中的每一个解复用为具有正好一个层的两个或更多个解复用的音频数据流，使得两个或更多个解复用的音频数据流一起构成一个或更多层的输入音频数据流。此外，该装置包括用于基于多个单层音频数据流来生成具有一个或多个层的合并音频数据流的合并模块（190）。单层数据流和合并音频数据流的解复用音频数据流的输入数据音频流的每一层包括作为音频数据的压力信号，位置值和扩散度值的压力值。

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