상세정보
학술지
Audio Transcoding for Audio Streams from a T-DTV Broadcasting Station to a T-DMB Receiver
- 저자
- 방경호, 박영철, 서정일
- 발행일
- 200610
- 출처
- ETRI Journal, v.28 no.5, pp.664-667
- ISSN
- 1225-6463
- 출판사
- 한국전자통신연구원 (ETRI)
- 협약과제
- 05MR3100, 통방융합 환경에서의 유비쿼터스 콘텐츠 서비스 기술 개발, 홍진우
- 초록
- We propose an efficient audio transcoding algorithm that can convert audio streams from terrestrial digital television broadcasting service stations to those for terrestrial digital multimedia broadcasting hand-held receivers. The proposed algorithm avoids the complicated psychoacoustic analysis by calculating the scalefactors of the bit-sliced arithmetic coding encoder directly from the signal-to-noise ratio parameters of the AC-3 decoder. The bit-allocation process is also simplified by cascading the nested distortion control loop. Through subjective evaluation, it is shown that the proposed algorithm provides comparable audio quality to tandem coding but it requires much smaller complexity.
- KSP 제안 키워드
- Audio quality, Bit-sliced, Digital multimedia broadcasting, Digital television broadcasting, Hand-held, Signal noise ratio(SNR), Signal-to-Noise, arithmetic coding, bit allocation, control loop, digital television(DTV)