Quality Enhancement of Low Bit Rate Mpeg1-Layer 3 Audio Based on Audio Resynthesis

Cantzos D, Kyriakakis C. Quality Enhancement of Low Bit Rate Mpeg1-Layer 3 Audio Based on Audio Resynthesis. In: AES Convention 119. Audio Engineering Society; 2005. Paper 6569. Available from: https://aes.org/publications/elibrary-page/?id=13299

@inproceedings{Cantzos2005_13299,
  author = {Cantzos, Demetrios and Kyriakakis, Chris},
  title = {{Quality Enhancement of Low Bit Rate Mpeg1-Layer 3 Audio Based on Audio Resynthesis}},
  booktitle = {AES Convention 119},
  note = {Paper 6569},
  year = {2005},
  month = oct,
  publisher = {Audio Engineering Society},
  url = {https://aes.org/publications/elibrary-page/?id=13299}
}

TY  - CPAPER
TI  - Quality Enhancement of Low Bit Rate Mpeg1-Layer 3 Audio Based on Audio Resynthesis
AU  - Cantzos, Demetrios
AU  - Kyriakakis, Chris
T2  - AES Convention 119
M1  - Paper 6569
PY  - 2005
DA  - 2005/10/06
UR  - https://aes.org/publications/elibrary-page/?id=13299
PB  - Audio Engineering Society
LA  - en
AB  - One of the most popular audio compression formats is indisputably the MPEG1-Layer 3 format which is based on the idea of low-bit transparent encoding. As these types of audio signals are starting to migrate from portable players with inexpensive headphones to higher quality home audio systems, it is becoming evident that higher bit rates may be required to maintain transparency. We propose a novel method that enhances low bit rate MP3 encoded audio segments by applying multichannel audio resynthesis methods in a post-processing stage or during decoding. Our algorithm employs the highly efficient Generalized Gaussian mixture model which, combined with cepstral smoothing, leads to very low cepstral reconstruction errors. In addition, residual conversion is applied which proves to significantly improve the enhancement performance. The method presented can be easily generalized to include other audio formats for which sound quality is an issue.
ER  -