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    Audio Encoder and Decoder for Encoding and Decoding Frames of a Sampled Audio Signal
    1.
    发明申请
    Audio Encoder and Decoder for Encoding and Decoding Frames of a Sampled Audio Signal 有权
    音频编码器和解码器，用于对采样音频信号的帧进行编码和解码

    公开(公告)号：US20110173011A1

    公开(公告)日：2011-07-14

    申请号：US13004475

    申请日：2011-01-11

    申请人： Ralf Geiger ,  Bernhard Grill ,  Bruno Bessette ,  Philippe Gournay ,  Guillaume Fuchs ,  Markus Multrus ,  Max Neuendorf ,  Gerald Schuller

    发明人： Ralf Geiger ,  Bernhard Grill ,  Bruno Bessette ,  Philippe Gournay ,  Guillaume Fuchs ,  Markus Multrus ,  Max Neuendorf ,  Gerald Schuller

    IPC分类号： G10L19/00

    CPC分类号： G10L19/0212 ,  G10L19/04

    摘要： An audio encoder adapted for encoding frames of a sampled audio signal to obtain encoded frames, wherein a frame includes a number of time domain audio samples. The audio encoder includes a predictive coding analysis stage for determining information on coefficients of a synthesis filter and a prediction domain frame based on a frame of audio samples. The audio encoder further includes a time-aliasing introducing transformer for transforming overlapping prediction domain frames to the frequency domain to obtain prediction domain frame spectra, wherein the time-aliasing introducing transformer is adapted for transforming the overlapping prediction domain frames in a critically-sampled way. Moreover, the audio encoder includes a redundancy reducing encoder for encoding the prediction domain frame spectra to obtain the encoded frames based on the coefficients and the encoded prediction domain frame spectra.

    摘要翻译： 一种音频编码器，适于编码采样的音频信号的帧以获得编码的帧，其中帧包括多个时域音频采样。 音频编码器包括用于基于音频样本的帧来确定关于合成滤波器和预测域帧的系数的信息的预测编码分析阶段。 音频编码器还包括时间混叠引入变压器，用于将重叠的预测域帧转换到频域以获得预测域帧频谱，其中时间混叠引入变压器适于以重要取样的方式变换重叠的预测域帧 。 此外，音频编码器包括冗余减少编码器，用于根据系数和编码的预测域帧频谱对预测域帧频谱进行编码以获得编码的帧。

    Audio coder/decoder with predictive coding of synthesis filter and critically-sampled time aliasing of prediction domain frames
    2.
    发明授权
    Audio coder/decoder with predictive coding of synthesis filter and critically-sampled time aliasing of prediction domain frames 有权
    具有合成滤波器的预测编码和预测域帧的临时采样时间混叠的音频编码器/解码器

    公开(公告)号：US08595019B2

    公开(公告)日：2013-11-26

    申请号：US13004475

    申请日：2011-01-11

    申请人： Ralf Geiger ,  Bernhard Grill ,  Bruno Bessette ,  Philippe Gournay ,  Guillaume Fuchs ,  Markus Multrus ,  Max Neuendorf ,  Gerald Schuller

    发明人： Ralf Geiger ,  Bernhard Grill ,  Bruno Bessette ,  Philippe Gournay ,  Guillaume Fuchs ,  Markus Multrus ,  Max Neuendorf ,  Gerald Schuller

    IPC分类号： G10L19/00 ,  G10L19/02 ,  G10L19/04

    CPC分类号： G10L19/0212 ,  G10L19/04

    摘要： An audio encoder adapted for encoding frames of a sampled audio signal to obtain encoded frames, wherein a frame includes a number of time domain audio samples. The audio encoder includes a predictive coding analysis stage for determining information on coefficients of a synthesis filter and a prediction domain frame based on a frame of audio samples. The audio encoder further includes a time-aliasing introducing transformer for transforming overlapping prediction domain frames to the frequency domain to obtain prediction domain frame spectra, wherein the time-aliasing introducing transformer is adapted for transforming the overlapping prediction domain frames in a critically-sampled way. Moreover, the audio encoder includes a redundancy reducing encoder for encoding the prediction domain frame spectra to obtain the encoded frames based on the coefficients and the encoded prediction domain frame spectra.

    摘要翻译： 一种音频编码器，适于编码采样的音频信号的帧以获得编码的帧，其中帧包括多个时域音频采样。 音频编码器包括用于基于音频样本的帧来确定关于合成滤波器和预测域帧的系数的信息的预测编码分析阶段。 音频编码器还包括时间混叠引入变压器，用于将重叠的预测域帧转换到频域以获得预测域帧频谱，其中时间混叠引入变压器适于以重要取样的方式变换重叠的预测域帧 。 此外，音频编码器包括冗余减少编码器，用于根据系数和编码的预测域帧频谱对预测域帧频谱进行编码以获得编码的帧。