Quality Improvement of Scalable Audio Codec Based on Phase Estimation Technique For Reconstructed Harmonic Structure

Chang WC, Su AWY. Quality Improvement of Scalable Audio Codec Based on Phase Estimation Technique For Reconstructed Harmonic Structure. In: AES Convention 121. Audio Engineering Society; 2006. Paper 6896. Available from: https://aes.org/publications/elibrary-page/?id=13730

@inproceedings{Chang2006_13730,
  author = {Chang, Wei-Chen and Su, Alvin W.Y.},
  title = {{Quality Improvement of Scalable Audio Codec Based on Phase Estimation Technique For Reconstructed Harmonic Structure}},
  booktitle = {AES Convention 121},
  note = {Paper 6896},
  year = {2006},
  month = oct,
  publisher = {Audio Engineering Society},
  url = {https://aes.org/publications/elibrary-page/?id=13730}
}

TY  - CPAPER
TI  - Quality Improvement of Scalable Audio Codec Based on Phase Estimation Technique For Reconstructed Harmonic Structure
AU  - Chang, Wei-Chen
AU  - Su, Alvin W.Y.
T2  - AES Convention 121
M1  - Paper 6896
PY  - 2006
DA  - 2006/10/06
UR  - https://aes.org/publications/elibrary-page/?id=13730
PB  - Audio Engineering Society
LA  - en
AB  - A spectral oriented trees based audio coder with harmonic structure reconstruction was proposed recently. Its fine scalability, low complexity, and almost MP3 quality make it suitable for Internet applications. However, during the reconstruction process, the phase information of reconstructed coefficient is absent. This may create phase discontinuities between two adjacent frames. It is audible in listening tests and makes the objective grade degraded for many testing sources. In this paper, we presented a new inter/intra-frame phase estimation method to reduce the problem and a refined harmonic reconstruction method is also applied. The quality improvement is significant. It outperforms the previous method and its performance is closer to the popular MP3pro for many audio music sources.
ER  -