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멀티채널 Spatial Audio Coding에서의 효율적인 Spatial Cues 사용과 그에 따른 Spectrum 보상방법
이병화,백승권,서정일,한민수,Lee, Byong-Hwa,Beack, Seung-Kwon,Seo, Jeong-Gil,Han, Min-Soo 대한음성학회 2005 말소리 Vol.53 No.-
This paper proposes an efficiently representing method of spatial cues on multichannel spatial audio coding. The Binaural Cue Coding (BCC) method introduced recently represents multichannel audio signals by means of Inter Channel Level Difference (ICLD) or Source Index (SI). We tried to express more efficiently ICLD and SI information based on Inter Channel Correlation in this paper. We adopt different spatial cues according to ICC and propose a compensation method of empty spectrums created by using SI. We performed a MOS test and measuring spectral distortion. The results show that the proposed method can reduce the bitrate of side information without large degradation of the audio quality.