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학술지 Design and Development of T-DMB Multichannel Audio Service System Based on Spatial Audio Coding
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저자
이용주, 서정일, 백승권, 장대영, 강경옥, 김진웅, 홍진우
발행일
200908
출처
ETRI Journal, v.31 no.4, pp.365-375
ISSN
1225-6463
출판사
한국전자통신연구원 (ETRI)
DOI
https://dx.doi.org/10.4218/etrij.09.0108.0557
협약과제
08MR4800, 차세대DTV핵심기술개발(표준화연계)-무안경개인형3D방송기술개발(계속), 안치득
초록
In this paper, a terrestrial digital multimedia broadcasting (T-DMB) multichannel audio broadcasting system based on spatial audio coding is presented. The proposed system provides realistic multichannel audio service via T-DMB with a small increase of data rate as well as backward compatibility with the conventional stereo-based T-DMB player. To reduce the data rate for additional multichannel audio signals, we compress the multichannel audio signals using the sound source location cue coding algorithm, which is an efficient parametric multichannel audio compression technique. For compatibility, we use the dependent property of an elementary stream descriptor, and this property should be ignored in a conventional T-DMB player. To verify the feasibility of the proposed system, we implement the TDMB multichannel audio encoder and a prototype player. We perform a compatibility test using the T-DMB multichannel audio encoder and conventional T-DMB players. The test demonstrates that the proposed system is compatible with a conventional T-DMB player and that it can provide a promisingly rich audio service.
키워드
DMB, Multichannel audio, T-DMB
KSP 제안 키워드
Backward compatibility, Broadcasting system, Compatibility test, Compression Technique, Digital multimedia broadcasting, Multichannel Audio Signals, Multichannel audio compression, Service System, Sound source, Source Location, Spatial audio coding