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    Concept for audio encoding and decoding for audio channels and audio objects
    1.
    发明公开
    Concept for audio encoding and decoding for audio channels and audio objects 审中-公开
    Konzept zur Audiocodierung und AudiodecodierungfürAudiokanäleund Audioobjekte

    公开(公告)号：EP2830045A1

    公开(公告)日：2015-01-28

    申请号：EP13177378.0

    申请日：2013-07-22

    申请人： Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. ,  Friedrich-Alexander-Universität Erlangen-Nürnberg

    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通道的输入接口（100），与多个音频中的一个或多个音频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有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频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。

    AUDIO DECODING METHOD FOR PROCESSING STEREO AUDIO SIGNALS USING A VARIABLE PREDICTION DIRECTION
    2.
    发明公开
    AUDIO DECODING METHOD FOR PROCESSING STEREO AUDIO SIGNALS USING A VARIABLE PREDICTION DIRECTION 审中-实审

    公开(公告)号：EP4404559A2

    公开(公告)日：2024-07-24

    申请号：EP24167074.4

    申请日：2011-02-17

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

    发明人： Julien, Robilliard ,  Neusinger, Matthias ,  Helmrich, Christian ,  Hilpert, Johannes ,  Rettelbach, Nikolaus ,  Disch, Sascha ,  Edler, Bernd

    IPC分类号： H04N19/154

    CPC分类号： G10L19/008 ,  G10L19/06 ,  H04N19/50 ,  H04N19/105 ,  H04N19/156 ,  H04N19/154 ,  H04N19/146 ,  H04N19/70

    摘要： An audio or video encoder and an audio or video decoder are based on a combination of two audio or video channels (201, 202) to obtain a first combination signal (204) as a mid signal and a residual signal (205) which can be derived using a predicted side signal derived from the mid signal. The first combination signal and the prediction residual signal are encoded (209) and written (212) into a data stream (213) together with the prediction information (206) derived by an optimizer (207) based on an optimization target (208) and a prediction direction indicator indicating a prediction direction associated with the residual signal. A decoder uses the prediction residual signal, the first combination signal, the prediction direction indicator and the prediction information to derive a decoded first channel signal and a decoded second channel signal. In an encoder example or in a decoder example, a real-to-imaginary transform can be applied for estimating the imaginary part of the spectrum of the first combination signal. For calculating the prediction signal used in the derivation of the prediction residual signal, the real-valued first combination signal is multiplied by a real portion of the complex prediction information and the estimated imaginary part of the first combination signal is multiplied by an imaginary portion of the complex prediction information.

    AUDIO ENCODER, AUDIO DECODER AND RELATED METHODS FOR PROCESSING MULTI-CHANNEL AUDIO SIGNALS USING COMPLEX PREDICTION AND REAL INDICATOR
    9.
    发明公开
    AUDIO ENCODER, AUDIO DECODER AND RELATED METHODS FOR PROCESSING MULTI-CHANNEL AUDIO SIGNALS USING COMPLEX PREDICTION AND REAL INDICATOR 审中-公开
    音频编码器，用于进行多声道音频音频解码器和相关方法信号使用复杂的预测与真实指标

    公开(公告)号：EP2947657A1

    公开(公告)日：2015-11-25

    申请号：EP15176785.2

    申请日：2011-03-23

    申请人： Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. ,  Dolby International AB

    发明人： Purnhagen, Heiko ,  Carlsson, Pontus ,  Villemoes, Lars ,  Robilliard, Julien ,  Neusinger, Matthias ,  Helmrich, Christian ,  Hilpert, Johannes ,  Rettelbach, Nikolaus ,  Disch, Sascha ,  Edler, Bernd

    IPC分类号： G10L19/008 ,  G10L19/04 ,  G10L19/022

    CPC分类号： G10L19/04 ,  G10L19/008

    摘要： An audio encoder and an audio decoder are based on a combination of two audio channels (201, 202) to obtain a first combination signal (204) as a mid signal and a residual signal (205) which can be derived using a predicted side signal derived from the mid signal. The first combination signal and the prediction residual signal are encoded (209) and written (212) into a data stream (213) together with the prediction information (206) derived by an optimizer (207) based on an optimization target (208). A decoder uses the prediction residual signal, the first combination signal and the prediction information to derive a decoded first channel signal and a decoded second channel signal. In an encoder example or in a decoder example, a real-to-imaginary transform can be applied for estimating the imaginary part of the spectrum of the first combination signal. For calculating the prediction signal used in the derivation of the prediction residual signal, the real-valued first combination signal is multiplied by a real portion of the complex prediction information and the estimated imaginary part of the first combination signal is multiplied by an imaginary portion of the complex prediction information.

    摘要翻译： 到音频解码器的音频编码器，并且基于两个音频信道的组合（201,202），以获得第一组合信号（204）作为一个中间信号和其可以使用预测的侧信号导出的残差信号（205） 从中间信号导出。 第一组合信号和所述预测残差信号进行编码（209）和写入（212）成数据流（213），在优化目标（208）的基础上通过在优化器（207）导出的所述预测信息（206）连接在一起。 解码器使用所述预测残差信号，第一组合信号和预测信息来导出经解码的第一声道信号和解码的第二信道信号。 在编码器实施例中或在解码器实施例中，实部 - 虚数变换可以应用用于估计所述第一组合信号的频谱的虚部。 用于计算预测残留信号的导出中使用的预测信号，该实值的第一组合信号，乘以的复预测信息和所述第一组合信号的估算虚部实数部分在虚部被-乘以 复杂的预测信息。

    AUDIO ENCODER, AUDIO DECODER AND RELATED METHODS FOR PROCESSING MULTI-CHANNEL AUDIO SIGNALS USING COMPLEX PREDICTION AND A TRANSFORM LENGTH INDICATOR
    10.
    发明公开
    AUDIO ENCODER, AUDIO DECODER AND RELATED METHODS FOR PROCESSING MULTI-CHANNEL AUDIO SIGNALS USING COMPLEX PREDICTION AND A TRANSFORM LENGTH INDICATOR 审中-公开
    音频编码器，用于进行多声道音频音频解码器和相关方法信号的应用转型长度指示一个复预测

    公开(公告)号：EP2947654A1

    公开(公告)日：2015-11-25

    申请号：EP15176781.1

    申请日：2011-03-23

    申请人： Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. ,  Dolby International AB

    发明人： Purnhagen, Heiko ,  Carlsson, Pontus ,  Villemoes, Lars ,  Robilliard, Julien ,  Neusinger, Matthias ,  Helmrich, Christian ,  Hilpert, Johannes ,  Rettelbach, Nikolaus ,  Disch, Sascha ,  Edler, Bernd

    IPC分类号： G10L19/008 ,  G10L19/04 ,  G10L19/022

    CPC分类号： G10L19/04 ,  G10L19/008

    摘要： An audio encoder and an audio decoder are based on a combination of two audio channels (201, 202) to obtain a first combination signal (204) as a mid signal and a residual signal (205) which can be derived using a predicted side signal derived from the mid signal. The first combination signal and the prediction residual signal are encoded (209) and written (212) into a data stream (213) together with the prediction information (206) derived by an optimizer (207) based on an optimization target (208). A decoder uses the prediction residual signal, the first combination signal and the prediction information to derive a decoded first channel signal and a decoded second channel signal. In an encoder example or in a decoder example, a real-to-imaginary transform can be applied for estimating the imaginary part of the spectrum of the first combination signal. For calculating the prediction signal used in the derivation of the prediction residual signal, the real-valued first combination signal is multiplied by a real portion of the complex prediction information and the estimated imaginary part of the first combination signal is multiplied by an imaginary portion of the complex prediction information.

    摘要翻译： 到音频解码器的音频编码器，并且基于两个音频信道的组合（201,202），以获得第一组合信号（204）作为一个中间信号和其可以使用预测的侧信号导出的残差信号（205） 从中间信号导出。 第一组合信号和所述预测残差信号进行编码（209）和写入（212）成数据流（213），在优化目标（208）的基础上通过在优化器（207）导出的所述预测信息（206）连接在一起。 解码器使用所述预测残差信号，第一组合信号和预测信息来导出经解码的第一声道信号和解码的第二信道信号。 在编码器实施例中或在解码器实施例中，实部 - 虚数变换可以应用用于估计所述第一组合信号的频谱的虚部。 用于计算预测残留信号的导出中使用的预测信号，该实值的第一组合信号，乘以的复预测信息和所述第一组合信号的估算虚部实数部分在虚部被-乘以 复杂的预测信息。