공간 오디오 부호화(spatial audio coding)는 기존의 스테레오 오디오 시스템과 호환성을 유지하면서 멀티채널 오디오 신호를 효과적으로 압축하기 위한 기술이다. MPEG에서는 AAC 및 MP3와 같은 기존의 스테레오 오디오 압축 표준과 호환성을 제공하면서 멀티채널 오디오 신호의 음장감을 유지하고 저비트율로 압축하기 위한 기술을 MPEG Surround란 이름으로 표준화가 진행 중이다. 본 논문에서는 MPEG Surround 기술의 개요와 표준화 진행상황을 소개하고, 향후 적용방안에 대해서 살펴보고자 한다.
KSP Keywords
MPEG Surround, Spatial audio coding
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