发明名称 |
FREQUENCY-BASED CODING OF AUDIO CHANNELS IN PARAMETRIC MULTI-CHANNEL CODING SYSTEMS |
摘要 |
For a multi-channel audio signal, parametric coding is applied to different subsets of audio input channels for different frequency regions. For example, for a 5.1 surround sound signal having five regular channels and one low-frequency (LFE) channel, binaural cue coding (BCC) can be applied to all six audio channels for sub-bands at or below a specified cut-off frequency, but to only five audio channels (excluding the LFE channel) for sub-bands above the cut-off frequency. Such frequency-based coding of channels can reduce the encoding and decoding processing loads and/or size of the encoded audio bitstream relative to parametric coding techniques that are applied to all input channels over the entire frequency range.
|
申请公布号 |
CA2557993(C) |
申请公布日期 |
2012.11.27 |
申请号 |
CA20052557993 |
申请日期 |
2005.02.23 |
申请人 |
AGERE SYSTEMS INC.;FRAUNHOFER-GESELLSCHAFT ZUR FOERDERUNG DER ANGEWANDTEN FORSCHUNG E.V. |
发明人 |
FALLER, CHRISTOF;HERRE, JUERGEN |
分类号 |
H04S3/00;G10L19/00 |
主分类号 |
H04S3/00 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|