Bit Allocation for Linear Prediction Coefficients with Application to Lossless Audio Compression

Ghido F, Tabus I. Bit Allocation for Linear Prediction Coefficients with Application to Lossless Audio Compression. In: AES Convention 124. Audio Engineering Society; 2008. Paper 7486. Available from: https://aes.org/publications/elibrary-page/?id=14616

@inproceedings{Ghido2008_14616,
  author = {Ghido, Florin and Tabus, Ioan},
  title = {{Bit Allocation for Linear Prediction Coefficients with Application to Lossless Audio Compression}},
  booktitle = {AES Convention 124},
  note = {Paper 7486},
  year = {2008},
  month = may,
  publisher = {Audio Engineering Society},
  url = {https://aes.org/publications/elibrary-page/?id=14616}
}

TY  - CPAPER
TI  - Bit Allocation for Linear Prediction Coefficients with Application to Lossless Audio Compression
AU  - Ghido, Florin
AU  - Tabus, Ioan
T2  - AES Convention 124
M1  - Paper 7486
PY  - 2008
DA  - 2008/05/06
UR  - https://aes.org/publications/elibrary-page/?id=14616
PB  - Audio Engineering Society
LA  - en
AB  - We propose a novel technique of using bit allocation for linear prediction coefficients in asymmetric lossless audio compression. We show how to determine the optimal bit allocation using a new closed-form formula for the excess error from quantization and describe a recently introduced algorithm (Optimization-Quantization Least Squares) which computes the optimal quantized prediction coefficients applied for the allocation. The proposed method, implemented as a modified asymmetrical OptimFROG, obtains small (but consistent) signal dependent compression improvements with virtually no decoder complexity increase (for an 847 MB audio corpus, up to 0.27%, on average around 0.06%). Compared to MPEG-4 ALS, it obtained 0.38% better compression, while being at the same time approximately 5 times faster at decoding.
ER  -