Optimal Bit Allocation Strategy for Perceptual Audio Coders Employing Uniform Quantization Schemes

Konda P, Prakash V. Optimal Bit Allocation Strategy for Perceptual Audio Coders Employing Uniform Quantization Schemes. In: AES Convention 116. Audio Engineering Society; 2004. Paper 6172. Available from: https://aes.org/publications/elibrary-page/?id=12649

@inproceedings{Konda2004_12649,
  author = {Konda, Preethi and Prakash, Vinod},
  title = {{Optimal Bit Allocation Strategy for Perceptual Audio Coders Employing Uniform Quantization Schemes}},
  booktitle = {AES Convention 116},
  note = {Paper 6172},
  year = {2004},
  month = may,
  publisher = {Audio Engineering Society},
  url = {https://aes.org/publications/elibrary-page/?id=12649}
}

TY  - CPAPER
TI  - Optimal Bit Allocation Strategy for Perceptual Audio Coders Employing Uniform Quantization Schemes
AU  - Konda, Preethi
AU  - Prakash, Vinod
T2  - AES Convention 116
M1  - Paper 6172
PY  - 2004
DA  - 2004/05/06
UR  - https://aes.org/publications/elibrary-page/?id=12649
PB  - Audio Engineering Society
LA  - en
AB  - Using the perceptual distortion metric returned by the psychoacoustic module, conventional bit allocation schemes operate iteratively to maintain equal perceptual distortion in all critical bands. For codecs employing uniform quantization schemes, this paper proposes a new approach to determine the optimal MNR (Mask to Noise Ratio) levels for the critical bands. The scheme exploits the fact that the quantizer used is uniform in nature and all critical bands are equally distorted, to arrive at a non-iterative solution. Additionally, this method is independent of the target bit-rate. The proposed scheme achieves a 2-3x reduction in the complexity of the quantization block. An example application for this scheme is given with reference to the MPEG-2 Layer 1 and 2 encoder.
ER  -