상세정보
등록 Low Power 모드 MPEG Surround 디코더에서 HE-AAC 다운믹스 신호와의 동기 방법 및 장치
- 출원번호
- 13449883 (2012.04.18)
- 공개번호
- 20120201388 (2012.08.09)
- 등록번호
- 8848926 (2014.09.30)
- 출원국
- 미국
- 협약과제
- 06MR1100, 지능형 통합정보 방송(SmaR TV) 기술개발, 안치득
- 초록
- Provided is a method for controlling synchronizing downmix signals and MPEG surround side information signals by controlling a delay according to the kind of downmix audio signals in an MPEG surround decoder. When multi-channel audio signals are restored using an HE-AAC decoder and a low-power MPEG surround decoder and complex QMF signals outputted from the HE-AAC decoder are used as downmix signals, a delay unit compensates for a delay caused in a real-to-complex converter. Anther delay unit delays spatial parameters to compensate for a delay caused in QMF and Nyquist banks when time-domain downmix signals are used. Also, when multi-channel audio signals are restored using an HE-AAC decoder and a high-quality MPEG surround decoder and complex QMF signals outputted from the HE-AAC decoder are used as downmix signals, a delay unit compensates for a delay caused in a real-to-complex converter.
- KSP 제안 키워드
- AAC decoder, Audio signal, Delay unit, High-quality, Low-Power, MPEG Surround, Multichannel audio, Spatial parameters, multi-channel, side information, time-domain
- 패밀리