发明名称 |
SOUND CODING DEVICE, SOUND DECODING DEVICE, SOUND CODING/DECODING DEVICE, AND CONFERENCE SYSTEM |
摘要 |
<p>The delay in a multi-channel audio coding apparatus and a multi-channel audio decoding apparatus is reduced. The audio coding apparatus includes: a downmix signal generating unit (410) that generates, in a time domain, a first downmix signal that is one of a 1-channel audio signal and a 2-channel audio signal from an input multi-channel audio signal; a downmix signal coding unit (404) that codes the first downmix signal; a first t-f converting unit (401) that converts the input multi-channel audio signal into a multi-channel audio signal in a frequency domain; and a spatial information calculating unit (409) that generates spatial information for generating a multi-channel audio signal from a downmix signal.</p> |
申请公布号 |
EP2306452(A1) |
申请公布日期 |
2011.04.06 |
申请号 |
EP20090802699 |
申请日期 |
2009.07.28 |
申请人 |
PANASONIC CORPORATION |
发明人 |
ISHIKAWA, TOMOKAZU;NORIMATSU, TAKESHI;CHONG, KOK SENG;ZHOU, HUAN |
分类号 |
G10L19/00;G10L19/008;G10L19/02 |
主分类号 |
G10L19/00 |
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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