公开(公告)号：US20240029744A1

公开(公告)日：2024-01-25

申请号：US18200190

申请日：2023-05-22

申请人： Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V.

发明人： Sascha Dick ,  Christian Ertel ,  Christian Helmrich ,  Johannes Hilpert ,  Andreas Hoelzer ,  Achim Kuntz

IPC分类号： G10L19/008 ,  G10L19/00 ,  G10L21/038 ,  H04S7/00 ,  H04S3/00

CPC分类号： G10L19/008 ,  G10L19/0017 ,  G10L21/038 ,  H04S7/30 ,  H04S3/008 ,  H04S2400/01 ,  H04S2400/03 ,  H04S2420/03

摘要： An audio decoder for providing at least four audio channel signals on the basis of an encoded representation is configured to provide a first residual signal and a second residual signal on the basis of a jointly encoded representation of the first residual signal and of the second residual signal using a multi-channel decoding. The audio decoder is configured to provide a first audio channel signal and a second audio channel signal on the basis of a first downmix signal and the first residual signal using a residual-signal-assisted multi-channel decoding. The audio decoder is configured to provide a third audio channel signal and a fourth audio channel signal on the basis of a second downmix signal and the second residual signal using a residual-signal-assisted multi-channel decoding. An audio encoder is based on corresponding considerations.

公开(公告)号：US11882323B2

公开(公告)日：2024-01-23

申请号：US17940849

申请日：2022-09-08

申请人： Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V.

发明人： Herbert Thoma ,  Robert Bleidt ,  Stefan Kraegeloh ,  Max Neuendorf ,  Achim Kuntz ,  Andreas Niedermeier ,  Michael Kratschmer

IPC分类号： H04N21/233 ,  H04N21/234 ,  H04N21/439 ,  H04H20/10 ,  H04N21/44 ,  H04N21/43 ,  H04L65/70 ,  H04L65/75 ,  H04L47/34

CPC分类号： H04N21/23424 ,  H04H20/103 ,  H04L47/34 ,  H04L65/70 ,  H04L65/75 ,  H04N21/233 ,  H04N21/4302 ,  H04N21/439 ,  H04N21/44004

摘要： Audio splicing is rendered more effective by the use of one or more truncation unit packets inserted into the audio data stream so as to indicate to an audio decoder, for a predetermined access unit, an end portion of an audio frame with which the predetermined access unit is associated, as to be discarded in playout.

公开(公告)号：US11657826B2

公开(公告)日：2023-05-23

申请号：US16990566

申请日：2020-08-11

申请人： Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V.

发明人： Sascha Dick ,  Christian Ertel ,  Christian Helmrich ,  Johannes Hilpert ,  Andreas Hoelzer ,  Achim Kuntz

IPC分类号： G10L19/008 ,  G10L19/00 ,  G10L21/038 ,  H04S7/00 ,  H04S3/00

CPC分类号： G10L19/008 ,  G10L19/0017 ,  G10L21/038 ,  H04S3/008 ,  H04S7/30 ,  H04S2400/01 ,  H04S2400/03 ,  H04S2420/03

摘要： An audio decoder for providing at least four audio channel signals on the basis of an encoded representation is configured to provide a first residual signal and a second residual signal on the basis of a jointly encoded representation of the first residual signal and of the second residual signal using a multi-channel decoding. The audio decoder is configured to provide a first audio channel signal and a second audio channel signal on the basis of a first downmix signal and the first residual signal using a residual-signal-assisted multi-channel decoding. The audio decoder is configured to provide a third audio channel signal and a fourth audio channel signal on the basis of a second downmix signal and the second residual signal using a residual-signal-assisted multi-channel decoding. An audio encoder is based on corresponding considerations.

公开(公告)号：US20210233543A1

公开(公告)日：2021-07-29

申请号：US16990566

申请日：2020-08-11

申请人： Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V.

发明人： Sascha Dick ,  Christian Ertel ,  Christian Helmrich ,  Johannes Hilpert ,  Andreas Hoelzer ,  Achim Kuntz

IPC分类号： G10L19/008 ,  G10L19/00 ,  G10L21/038 ,  H04S7/00 ,  H04S3/00

摘要： An audio decoder for providing at least four audio channel signals on the basis of an encoded representation is configured to provide a first residual signal and a second residual signal on the basis of a jointly encoded representation of the first residual signal and of the second residual signal using a multi-channel decoding. The audio decoder is configured to provide a first audio channel signal and a second audio channel signal on the basis of a first downmix signal and the first residual signal using a residual-signal-assisted multi-channel decoding. The audio decoder is configured to provide a third audio channel signal and a fourth audio channel signal on the basis of a second downmix signal and the second residual signal using a residual-signal-assisted multi-channel decoding. An audio encoder is based on corresponding considerations.

公开(公告)号：US20210056979A1

公开(公告)日：2021-02-25

申请号：US17011584

申请日：2020-09-03

申请人： Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V.

发明人： Sascha Dick ,  Christian Ertel ,  Christian Helmrich ,  Johannes Hilpert ,  Andreas Hoelzer ,  Achim Kuntz

IPC分类号： G10L19/008 ,  G10L19/00 ,  G10L21/038 ,  H04S7/00 ,  H04S3/00

摘要： An audio decoder for providing at least four bandwidth-extended channel signals on the basis of an encoded representation provides first and second downmix signals on the basis of a jointly encoded representation of the first and second downmix signals using a multi-channel decoding and provides at least first and second audio channel signals on the basis of the first downmix signal using a multi-channel decoding, and provides at least third and fourth audio channel signals on the basis of the second downmix signal using a multi-channel decoding. It performs a multi-channel bandwidth extension on the basis of the first and third audio channel signals, to obtain first and third bandwidth-extended channel signals, and performs a multi-channel bandwidth extension on the basis of the second and fourth audio channel signals, to obtain second and fourth bandwidth extended channel signals. An audio encoder uses a related concept.

公开(公告)号：US10154362B2

公开(公告)日：2018-12-11

申请号：US15002094

申请日：2016-01-20

申请人： Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V.

发明人： Juergen Herre ,  Fabian Kuech ,  Michael Kratschmer ,  Achim Kuntz ,  Christoph Faller

IPC分类号： H04R5/00 ,  H04S7/00 ,  H04S3/00 ,  H04R5/02 ,  H04S3/02 ,  G10L19/008

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, configured to map the first input channel to a first output channel of the output channel configuration; and 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.

公开(公告)号：US09936327B2

公开(公告)日：2018-04-03

申请号：US15000876

申请日：2016-01-19

申请人： Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V.

发明人： Juergen Herre ,  Fabian Kuech ,  Michael Kratschmer ,  Achim Kuntz ,  Christoph Faller

IPC分类号： H04R5/00 ,  H04S7/00 ,  H04S3/00 ,  H04R5/02 ,  H04S3/02 ,  G10L19/008

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： A method for mapping a plurality of input channels of an input channel configuration to output channels of an output channel configuration includes providing a set of rules associated with each input channel of the plurality of input channels, wherein the rules define different mappings between the associated input channel and a set of output channels. For each input channel of the plurality of input channels, a rule associated with the input channel is accessed, determination is made whether the set of output channels defined in the accessed rule is present in the output channel configuration, and the accessed rule is selected if the set of output channels defined in the accessed rule is present in the output channel configuration. The input channels are mapped to the output channels according to the selected rule.

公开(公告)号：US09502040B2

公开(公告)日：2016-11-22

申请号：US13944766

申请日：2013-07-17

申请人： Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V.

发明人： Achim Kuntz ,  Sascha Disch ,  Tom Baeckstroem

IPC分类号： G10L19/00 ,  G10L21/00 ,  G10L19/16 ,  G10L19/24 ,  G10L19/008

CPC分类号： G10L19/00 ,  G10L19/008 ,  G10L19/167 ,  G10L19/24

摘要： An apparatus for decoding, an apparatus for encoding, a method for decoding and a method for encoding positions of slots having events in an audio signal frame and respective computer programs and encoded signals, wherein the apparatus for decoding has: an analyzing unit for analyzing a frame slots number indicating the total of slots of the audio signal frame, an event slots number indicating the number of slots having the events of the audio signal frame, and an event state number, and a generating unit for generating an indication of a plurality of positions of slots having the events in the audio signal frame using the frame slots number, the event slots number and the event state number.

摘要翻译： 一种用于解码的装置，用于编码的装置，用于解码的方法和用于编码具有音频信号帧中的事件的时隙的位置的方法以及各个计算机程序和编码信号，其中所述解码装置具有：分析单元， 指示音频信号帧的时隙的总数的帧时隙号，指示具有音频信号帧的事件的时隙数的事件时隙号和事件状态号，以及生成单元，用于生成多个 使用帧时隙号，事件时隙号和事件状态号在音频信号帧中具有事件的时隙位置。

公开(公告)号：US20160232901A1

公开(公告)日：2016-08-11

申请号：US15131263

申请日：2016-04-18

申请人： Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V.

发明人： Florin Ghido ,  Achim Kuntz ,  Bernhard Grill

IPC分类号： G10L19/008

CPC分类号： G10L19/008

摘要： A method is described which decodes a downmix matrix for mapping a plurality of input channels of audio content to a plurality of output channels, the input and output channels being associated with respective speakers at predetermined positions relative to a listener position, wherein the downmix matrix is encoded by exploiting the symmetry of speaker pairs of the plurality of input channels and the symmetry of speaker pairs of the plurality of output channels. Encoded information representing the encoded downmix matrix is received and decoded for obtaining the decoded downmix matrix.

摘要翻译： 描述了一种对下混合矩阵进行解码的方法，用于将音频内容的多个输入通道映射到多个输出通道，该输入和输出通道相对于收听者位置在预定位置处与相应的扬声器相关联，其中下混合矩阵是 通过利用多个输入通道的扬声器对的对称性和多个输出通道的扬声器对的对称性进行编码。 接收并解码表示编码缩混矩阵的编码信息，以获得解码的下混矩阵。

公开(公告)号：US09368122B2

公开(公告)日：2016-06-14

申请号：US14248747

申请日：2014-04-09

申请人： Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V.

发明人： Achim Kuntz ,  Sascha Disch ,  Juergen Herre ,  Fabian Kuech ,  Johannes Hilpert

IPC分类号： G10L19/008 ,  G10L19/00 ,  G10L19/025

CPC分类号： G10L19/0017 ,  G10L19/008 ,  G10L19/025

摘要： An apparatus for generating a decorrelated signal having a receiving unit for receiving phase information, a transient separator, a transient decorrelator, a second decorrelator and a combining unit, wherein the transient separator is adapted to separate an input signal into a first signal component and into a second signal component such that the first signal component has transient signal portions of the input signal and such that the second signal component has non-transient signal portions of the input signal. The transient decorrelator is adapted to apply the phase information received by the receiving unit to a transient signal component.

摘要翻译： 一种用于产生具有用于接收相位信息的接收单元，瞬态分离器，瞬态解相关器，第二去相关器和组合单元的去相关信号的装置，其中所述瞬态分离器适于将输入信号分离成第一信号分量并且进入 第二信号分量，使得第一信号分量具有输入信号的瞬态信号部分，并且使得第二信号分量具有输入信号的非瞬态信号部分。 瞬态解相关器适于将由接收单元接收的相位信息应用于瞬态信号分量。