发明名称 |
STEREO AUDIO ENCODING APPARATUS, STEREO AUDIO DECODING APPARATUS, AND METHOD THEREOF |
摘要 |
Disclosed is a stereo speech decoding device and others capable of reducing a stereo speech encoding bit rate and suppressing degradation of speech quality. In this device, a section 0 where only an L-channel signal SL(n) exists is identified, a monaural signal of the section 0 transmitted from the stereo speech encoding side is made to be an L-channel signal of section 0 SL(0)(n), and the L-channel signal SL(0)(n) of the section 0 is scale-adjusted so as to predict an R-channel signal SR(1)(n) of a section 1. A contribution of the R-channel signal SR(1)(n) of the predicted section 1 is subtracted from the monaural signal of the section 1 so as to isolate the L-channel signal SL(1)(n) of the section 1. This device continuously repeats the aforementioned scale adjustment and isolation process so as to obtain the L-channel signal SL(n) and the R-channel signal SR(n) of all the sections.
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申请公布号 |
US2009276210(A1) |
申请公布日期 |
2009.11.05 |
申请号 |
US20070295073 |
申请日期 |
2007.03.29 |
申请人 |
PANASONIC CORPORATION |
发明人 |
GOTO MICHIYO;YOSHIDA KOJI |
分类号 |
G10L19/14;G10L19/00;G10L19/008 |
主分类号 |
G10L19/14 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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