A Hybrid Warped Linear Prediction (WLP) AAC Audio Coding Algorithm

Kang HG, Lee JS, Park YC, Youn DH. A Hybrid Warped Linear Prediction (WLP) AAC Audio Coding Algorithm. In: AES Convention 122. Audio Engineering Society; 2007. Paper 7002. Available from: https://aes.org/publications/elibrary-page/?id=13987

@inproceedings{Kang2007_13987,
  author = {Kang, Hong-Goo and Lee, Jae-Seong and Park, Young-Cheol and Youn, Dae-Hee},
  title = {{A Hybrid Warped Linear Prediction (WLP) AAC Audio Coding Algorithm}},
  booktitle = {AES Convention 122},
  note = {Paper 7002},
  year = {2007},
  month = may,
  publisher = {Audio Engineering Society},
  url = {https://aes.org/publications/elibrary-page/?id=13987}
}

TY  - CPAPER
TI  - A Hybrid Warped Linear Prediction (WLP) AAC Audio Coding Algorithm
AU  - Kang, Hong-Goo
AU  - Lee, Jae-Seong
AU  - Park, Young-Cheol
AU  - Youn, Dae-Hee
T2  - AES Convention 122
M1  - Paper 7002
PY  - 2007
DA  - 2007/05/06
UR  - https://aes.org/publications/elibrary-page/?id=13987
PB  - Audio Engineering Society
LA  - en
AB  - We propose a hybrid warped linear prediction (WLP) AAC audio coding algorithm. The proposed algorithm employs a warped linear prediction (WLP) processor to construct a perceptual pre- and post-filter for the MPEG-4 AAC. The WLP residual is applied to the MDCT filterbank and the signal-to-mask ratio (SMR) of the corresponding block is modified to set a masking threshold for the WLP residuals. In the decoder, the reconstructed residual signal is passed to a modified WLP synthesis filter to restore the audio signal. Subjective tests show that the proposed audio codec operating at 50kbps has comparable perceptual quality to the conventional MPEG-4 AAC operating at the 58kbps.
ER  -