Papers

일정한 채널간 시간차 보상을 이용한 강건한 채널간 상관도 추정

Domestic Conference
2006~2010
작성자
이지현
작성일
2010-01-01 21:31
조회
666
Authors : 현동일, 서정일, 박영철, 윤대희
Year : 2010
Publisher / Conference : 2010년 제22회 영상처리 및 이해에 관한 워크샵
본 논문은 HE-AACv2의 파라메트릭 스테레오나 MPEG 서라운드와 같은 공간오디오부호화의 성능을 향상 시킬 수 있는 채널간 상관도(interchannel correlation: ICC) 추정방법을 제안한다. 기존의 ICC 추정 방법에서는 두 채널 신호간의 위상차가 파라미터 밴드 내에서 동일하다고 가정하고 위상차를 보상함으로써 ICC를 최대가 되게 한다. 채널간 위상차 (interchannel phase difference: IPD)를 이용하여 채널간 시간차 (interchannel time difference: ICTD)를 추정하고 그에 해당하는 선형 위상차를 보상하는 강건한 ICC 추정 방법을 제안한다. 시뮬레이션 결과는 제안된 방법이 기존의 방법에 비해 보다 정확한 ICC를 제공함을 보여준다.
« On the Importance of Transition Regions for Automatic Speaker Recognition
A Study on the Architecture for MPEG Unified Speech and Audio Coding »
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