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1. 发明申请

US20130034232A1 METHOD AND APPARATUS FOR DOWN-MIXING MULTI-CHANNEL AUDIO SIGNAL 审中-公开
标题翻译：用于下混频多声道音频信号的方法和装置
公开(公告)号：US20130034232A1
公开(公告)日：2013-02-07
申请号：US13554505
申请日：2012-07-20
申请人： Chang-Joon LEE
发明人： Chang-Joon LEE
IPC分类号： H04R5/00
CPC分类号： G10L19/008 , G10L19/0204
摘要： A method of down-mixing a multi-channel audio signal is provided. The method including restoring sub-band Pulse Coded Modulation (PCM) samples for each channel of the multi-channel audio signal by decoding the multi-channel audio-signal and then dequantizing a sub-band coded multi-channel audio signal, scaling the restored sub-band PCM samples for each channel with a coefficient corresponding to a down-mixing configuration, generating sub-band PCM samples corresponding to predetermined channels by down-mixing the scaled sub-band PCM samples for each channel into the predetermined channels, and performing inverse sub-band filtering on the generated sub-band PCM samples corresponding to the predetermined channels.
摘要翻译：提供了一种降低混合多声道音频信号的方法。该方法包括通过对多声道音频信号进行解码，然后对子频带编码的多声道音频信号进行去量化，对多声道音频信号的每个通道恢复子带脉冲编码调制（PCM）采样，缩放恢复的每个信道的子带PCM样本具有对应于下混合配置的系数，通过将每个信道的缩放子带PCM样本下混合到预定信道中，生成对应于预定信道的子带PCM样本，并执行对与预定信道相对应的所生成的子带PCM样本进行逆子带滤波。

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