发明授权
US08311810B2 Reduced delay spatial coding and decoding apparatus and teleconferencing system
有权
减少延迟空间编码和解码装置和电话会议系统
- 专利标题： Reduced delay spatial coding and decoding apparatus and teleconferencing system
- 专利标题（中）： 减少延迟空间编码和解码装置和电话会议系统
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申请号： US12679814申请日： 2009-07-28
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公开(公告)号： US08311810B2公开(公告)日： 2012-11-13
- 发明人: Tomokazu Ishikawa , Takeshi Norimatsu , Kok Seng Chong , Huan Zhou
- 申请人： Tomokazu Ishikawa , Takeshi Norimatsu , Kok Seng Chong , Huan Zhou
- 申请人地址： JP Osaka
- 专利权人： Panasonic Corporation
- 当前专利权人： Panasonic Corporation
- 当前专利权人地址： JP Osaka
- 代理机构： Wenderoth, Lind & Ponack, L.L.P.
- 优先权： JP2008-194414 20080729
- 国际申请： PCT/JP2009/003557 WO 20090728
- 国际公布： WO2010/013450 WO 20100204
- 主分类号： G10L21/00
- IPC分类号： G10L21/00 ; G10L19/02 ; H04R5/00
摘要：
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 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 that codes the first downmix signal; a first t-f converting unit that converts the input multi-channel audio signal into a multi-channel audio signal in a frequency domain; and a spatial information calculating unit that generates spatial information for generating a multi-channel audio signal from a downmix signal.
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