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CHANNEL SIGNAL GENERATION DEVICE, ACOUSTIC SIGNAL ENCODING DEVICE, ACOUSTIC SIGNAL DECODING DEVICE, ACOUSTIC SIGNAL ENCODING METHOD, AND ACOUSTIC SIGNAL DECODING METHOD
CHANNEL SIGNAL GENERATION DEVICE, ACOUSTIC SIGNAL ENCODING DEVICE, ACOUSTIC SIGNAL DECODING DEVICE, ACOUSTIC SIGNAL ENCODING METHOD, AND ACOUSTIC SIGNAL DECODING METHOD
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机译:信道信号生成设备,声音信号编码设备,声音信号解码设备,声音信号编码方法和声音信号解码方法
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摘要
Provided is a channel signal generation device capable of avoiding a decrease in the prediction performance for predicting an L channel signal and an R channel signal from a monaural signal and achieving encoding with high sound quality. In the device, a monaural MDCT coefficient corrector (301) generates a left channel change monaural MDCT coefficient and a right channel change monaural MDCT coefficient using a decoding monaural MDCT coefficient generated using a left channel signal and a right channel signal, which constitute an acoustic signal. More specifically, the monaural MDCT coefficient corrector (301) generates the left channel change monaural MDCT coefficient and the right channel change monaural MDCT coefficient by performing change processing for compensating for the phase difference between the left channel signal and the right channel signal on the decoding monaural MDCT coefficient according to inputted determination data.
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