公开(公告)号：US20130016843A1

公开(公告)日：2013-01-17

申请号：US13588139

申请日：2012-08-17

申请人： JÜRGEN HERRE ,  JOHANNES HILPERT ,  STEFAN GEYERSBERGER ,  ANDREAS HÖLZER ,  CLAUS SPENGER

发明人： JÜRGEN HERRE ,  JOHANNES HILPERT ,  STEFAN GEYERSBERGER ,  ANDREAS HÖLZER ,  CLAUS SPENGER

IPC分类号： H04R5/00

CPC分类号： H04S3/02 ,  G10L19/008 ,  G10L19/032 ,  H04S3/008 ,  H04S2400/03 ,  H04S2420/03

摘要： In processing a multi-channel audio signal having at least three original channels, a first downmix channel and a second downmix channel are provided, which are derived from the original channels. For a selected original channel, channel side information are calculated such that a downmix channel or a combined downmix channel including the first and the second downmix channels, when weighted using the channel side information, results in an approximation of the selected original channel. The channel side information and the first and second downmix channels form output data to be transmitted to a decoder, which, in case of a low level decoder only decodes the first and second downmix channels or, in case of a high level decoder provides a full multi-channel audio signal based on the downmix channels and the channel side information.

摘要翻译： 在处理具有至少三个原始信道的多声道音频信号时，提供从原始信道导出的第一下混通道和第二下混通道。 对于所选择的原始信道，计算信道侧信息，使得当使用信道侧信息加权时，包括第一和第二下混通道的下混通道或组合下混通道导致所选原始通道的近似。 信道侧信息以及第一和第二下混通道形成要发送到解码器的输出数据，其在低电平解码器的情况下仅解码第一和第二下混通道，或者在高电平解码器提供满 基于下混频道的多声道音频信号和频道侧信息。