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Method and apparatus for avoiding unmasking of coding noise when mixing perceptually coded multi-channel audio signals
Method and apparatus for avoiding unmasking of coding noise when mixing perceptually coded multi-channel audio signals
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机译:在混合感知编码的多声道音频信号时避免编码噪声的掩盖的方法和装置
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摘要
Playback of certain multi-channel audio signal representations on a particular loudspeaker set-up requires a special rendering, which usually consists of a matrixing operation. If a particular individual loudspeaker set-up on which the matrix of the matrixing operation depends is not known at the perceptual coding stage, a noise unmasking problem occurs. According to the invention, this problem can be solved by decorrelating the individual audio channel signals before perceptual encoding and recorrelating them after the perceptual decoding.
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