Fast Bit Allocation Method for MP3/AAC Encoders

Bang KH, Lee KS, Park YC, Youn DH. Fast Bit Allocation Method for MP3/AAC Encoders. In: AES Convention 118. Audio Engineering Society; 2005. Paper 6381. Available from: https://aes.org/publications/elibrary-page/?id=13097

@inproceedings{Bang2005_13097,
  author = {Bang, Kyoung Ho and Lee, Keup Sup and Park, Young Cheol and Youn, Dae Hee},
  title = {{Fast Bit Allocation Method for MP3/AAC Encoders}},
  booktitle = {AES Convention 118},
  note = {Paper 6381},
  year = {2005},
  month = may,
  publisher = {Audio Engineering Society},
  url = {https://aes.org/publications/elibrary-page/?id=13097}
}

TY  - CPAPER
TI  - Fast Bit Allocation Method for MP3/AAC Encoders
AU  - Bang, Kyoung Ho
AU  - Lee, Keup Sup
AU  - Park, Young Cheol
AU  - Youn, Dae Hee
T2  - AES Convention 118
M1  - Paper 6381
PY  - 2005
DA  - 2005/05/06
UR  - https://aes.org/publications/elibrary-page/?id=13097
PB  - Audio Engineering Society
LA  - en
AB  - In MP3/AAC encoders, the quantization parameter called scalefactor controls the quantization noise and the bitrate. Tuning these encoders would require a characterization of the rate-distortion function per subband, which seems to be available only in a parametric manner. In this paper, a fast bit allocation method for MP3/AAC encoder is presented. The resulting encoder is able to produce an ISO/MPEG compliant bitstream which can guarantee better audio quality. More importantly, the number of computational steps is greatly reduced as compared to the method recommended by the ISO/MPEG committee because the efficient bit allocation algorithm significantly reduces the number of iterations required. It was found that the efficient bit allocation algorithm works best when the bit rate demanded by the psychoacoustic model in order to keep the quantization noise below the masking threshold is almost equal to the operational bit rate.
ER  -