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Journal Article
Design and Development of T-DMB Multichannel Audio Service System Based on Spatial Audio Coding
- Authors
- Yong Ju Lee, Jeongil Seo, Seungkwon Beack, Daeyoung Jang, Kyeongok Kang, Jinwoong Kim, Jin Woo Hong
- Issue Date
- 2009-08
- Citation
- ETRI Journal, v.31, no.4, pp.365-375
- ISSN
- 1225-6463
- Publisher
- 한국전자통신연구원 (ETRI)
- Language
- English
- Type
- Journal Article
- Abstract
- 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.
- KSP Keywords
- Broadcasting system, Compatibility test, Compression techniques, Digital multimedia broadcasting, Multichannel Audio Signals, Multichannel audio compression, Service System, Sound source, Source Location, Spatial audio coding, backward compatibility