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    • 7. 发明授权
    • Audio signal decoder, audio signal encoder, encoded multi-channel audio signal representation, methods and computer program
    • 音频信号解码器,音频信号编码器,编码多声道音频信号表示,方法和计算机程序
    • US09025777B2
    • 2015-05-05
    • US12935740
    • 2009-07-01
    • Stefan BayerSascha DischRalf GeigerGuillaume FuchsMax NeuendorfGerald SchullerBernd Edler
    • Stefan BayerSascha DischRalf GeigerGuillaume FuchsMax NeuendorfGerald SchullerBernd Edler
    • H04R5/00G10L21/04G10L19/022G10L19/02
    • G10L21/04G10L19/0212G10L19/022G10L19/032G10L19/167
    • An audio signal decoder for providing a decoded multi-channel audio signal representation on the basis of an encoded multi-channel audio signal representation has a time warp decoder configured to selectively use individual audio channel specific time warp contours or a joint multi-channel time warp contour for a reconstruction of a plurality of audio channels represented by the encoded multi-channel audio signal representation. An audio signal encoder for providing an encoded representation of a multi-channel audio signal has an encoded audio representation provider configured to selectively provide an audio representation having a common time warp contour information, commonly associated with a plurality of audio channels of the multi-channel audio signal, or an encoded audio representation having individual time warp contour information, individually associated with the different audio channels of the plurality of audio channels, in dependence on an information describing a similarity or difference between time warp contours associated with the audio channels of the plurality of audio channels.
    • 用于基于编码的多声道音频信号表示提供解码的多声道音频信号表示的音频信号解码器具有时间扭曲解码器,其被配置为选择性地使用单独的音频通道特定时间扭曲轮廓或联合多通道时间扭曲 用于重建由编码的多声道音频信号表示表示的多个音频通道的轮廓。 用于提供多声道音频信号的编码表示的音频信号编码器具有编码音频表示提供器,其被配置为选择性地提供具有公共时间扭曲轮廓信息的音频表示,通常与多声道音频信号的多个音频通道相关联 音频信号或具有单独与多个音频通道的不同音频通道相关联的具有各个时间扭曲轮廓信息的经编码的音频表示,该信息根据描述与音频通道的音频通道相关联的时间扭曲轮廓之间的相似性或差异的信息 多个音频通道。
    • 9. 发明申请
    • Audio Signal Decoder, Time Warp Contour Data Provider, Method and Computer Program
    • 音频信号解码器,时间扭曲轮廓数据提供者,方法和计算机程序
    • US20110106542A1
    • 2011-05-05
    • US12935718
    • 2009-07-01
    • Stefan BayerSascha DischRalf GeigerGuillaume FuchsMax NeuendorfGerald SchullerBernd Edler
    • Stefan BayerSascha DischRalf GeigerGuillaume FuchsMax NeuendorfGerald SchullerBernd Edler
    • G10L19/00
    • G10L21/04G10L19/0212G10L19/022G10L19/032G10L19/167
    • An audio signal decoder configured to provide a decoded audio signal representation on the basis of an encoded audio signal representation having a time warp contour evolution information has a time warp contour calculator, a time warp contour data rescaler and a warp decoder. The time warp contour calculator is configured to generate time warp contour data repeatedly restarting from a predetermined time warp contour start value on the basis of a time warp contour evolution information describing a temporal evolution of the time warp contour. The time warp contour data rescaler is configured to rescale at least a portion of the time warp contour data such that a discontinuity at a restart is avoided, reduced or eliminated in a rescaled version of the time warp contour. The warp decoder is configured to provide the decoded audio signal representation on the basis of the encoded audio signal representation and using the rescaled version of the time warp contour.
    • 配置成基于具有时间扭曲轮廓演变信息的编码音频信号表示来提供解码音频信号表示的音频信号解码器具有时间扭曲轮廓计算器,时间扭曲轮廓数据重定标器和扭曲解码器。 时间扭曲轮廓计算器被配置为基于描述时间扭曲轮廓的时间演变的时间扭曲轮廓演化信息,从预定的时间扭曲轮廓开始值产生重复重新起动的时间扭曲轮廓数据。 时间扭曲轮廓数据重定标器被配置为重新缩放时间扭曲轮廓数据的至少一部分,使得在时间扭曲轮廓的重新缩放版本中避免,减少或消除重启时的不连续性。 扭曲解码器被配置为基于编码的音频信号表示并使用时间扭曲轮廓的重新缩放版本来提供解码的音频信号表示。