发明授权
- 专利标题： Downmixing device and method
- 专利标题（中）： 降混装置及方法
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申请号： US13074379申请日： 2011-03-29
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公开(公告)号： US08818764B2公开(公告)日： 2014-08-26
- 发明人: Yohei Kishi , Masanao Suzuki , Miyuki Shirakawa , Yoshiteru Tsuchinaga
- 申请人： Yohei Kishi , Masanao Suzuki , Miyuki Shirakawa , Yoshiteru Tsuchinaga
- 申请人地址： JP Kawasaki-shi
- 专利权人： Fujitsu Limited
- 当前专利权人： Fujitsu Limited
- 当前专利权人地址： JP Kawasaki-shi
- 代理机构： Oblon, Spivak, McClelland, Maier & Neustadt, L.L.P.
- 优先权： JP2010-78570 20100330
- 主分类号： H03F1/26
- IPC分类号： H03F1/26
摘要：
A downmixing device includes: a matrix conversion unit configured to perform a matrix operation for an input signal; a rotation correction unit configured to rotate an output signal of the matrix conversion unit; a spatial information extraction unit configured to extract spatial information from the output signal of the rotation correction unit; and an error calculation unit configured to calculate an error amount of the matrix operation result for the input signal by performing a matrix operation for the output signal of the rotation correction unit and the spatial information extracted by the spatial information extraction unit using a matrix that is inverse to the matrix used for the matrix operation by the matrix conversion unit.
公开/授权文献
- US20110246139A1 DOWNMIXING DEVICE AND METHOD 公开/授权日：2011-10-06
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