A Dual Audio Transcoding Algorithm for Digital Multimedia Broadcasting Services

Bang KH, Park YC, Youn DH. A Dual Audio Transcoding Algorithm for Digital Multimedia Broadcasting Services. In: AES Convention 120. Audio Engineering Society; 2006. Paper 6814. Available from: https://aes.org/publications/elibrary-page/?id=13618

@inproceedings{Bang2006_13618,
  author = {Bang, Kyoung Ho and Park, Young-cheol and Youn, Dae-hee},
  title = {{A Dual Audio Transcoding Algorithm for Digital Multimedia Broadcasting Services}},
  booktitle = {AES Convention 120},
  note = {Paper 6814},
  year = {2006},
  month = may,
  publisher = {Audio Engineering Society},
  url = {https://aes.org/publications/elibrary-page/?id=13618}
}

TY  - CPAPER
TI  - A Dual Audio Transcoding Algorithm for Digital Multimedia Broadcasting Services
AU  - Bang, Kyoung Ho
AU  - Park, Young-cheol
AU  - Youn, Dae-hee
T2  - AES Convention 120
M1  - Paper 6814
PY  - 2006
DA  - 2006/05/06
UR  - https://aes.org/publications/elibrary-page/?id=13618
PB  - Audio Engineering Society
LA  - en
AB  - In this paper, we propose a dual audio transcoding algorithm to service high quality audio streams using a broadcasting network comprising heterogeneous audio formats. As two typical cases, audio transcodings from TDTV to T-DMB and S-DMB services are considered. While the Korean DTV audio standard employs the Dolby AC-3, the Korean T-DMB and Korean S-DMB services use the MPEG-4 BSAC and the MPEG-4 HE-AAC audio coding technologies, respectively. In the proposed algorithm, the bit allocation information of AC-3 is reused in the process of BSAC and HE-AAC encodings and the nested loops are reestablished as two independent loops, which saves significant amount of computational cost. In overall, the transcoding algorithm can save about 65% of computational cost for the BSAC encoding and 31% of HE-AAC encoding. Subjective quality evaluations show that the proposed algorithm has mean diffgrades of -0.02 and -0.01 relative to the tandem method. Due to its computational simplicity and effective performance, the proposed algorithm is suitable for the mobile multimedia services.
ER  -