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Journal Article
Audio Transcoding for Audio Streams from a T-DTV Broadcasting Station to a T-DMB Receiver
- Authors
- Kyoung Ho Bang, Young Cheol Park, Jeong Il Seo
- Issue Date
- 2006-10
- Citation
- ETRI Journal, v.28, no.5, pp.664-667
- ISSN
- 1225-6463
- Publisher
- 한국전자통신연구원 (ETRI)
- Language
- English
- Type
- Journal Article
- Project Code
- 05MR3100, Development of Ubiquitous Content Access Technology for Convergence of Broadcasting and Communications, Hong Jin Woo
- Abstract
- 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 Keywords
- 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)