Stereo Audio Coding Improved by Phase Parameters

Kim M, Oh E, Shim H. Stereo Audio Coding Improved by Phase Parameters. In: AES Convention 129. Audio Engineering Society; 2010. Paper 8289. Available from: https://aes.org/publications/elibrary-page/?id=15711

@inproceedings{Kim2010_15711,
  author = {Kim, Miyoung and Oh, Eunmi and Shim, Hwan},
  title = {{Stereo Audio Coding Improved by Phase Parameters}},
  booktitle = {AES Convention 129},
  note = {Paper 8289},
  year = {2010},
  month = nov,
  publisher = {Audio Engineering Society},
  url = {https://aes.org/publications/elibrary-page/?id=15711}
}

TY  - CPAPER
TI  - Stereo Audio Coding Improved by Phase Parameters
AU  - Kim, Miyoung
AU  - Oh, Eunmi
AU  - Shim, Hwan
T2  - AES Convention 129
M1  - Paper 8289
PY  - 2010
DA  - 2010/11/06
UR  - https://aes.org/publications/elibrary-page/?id=15711
PB  - Audio Engineering Society
LA  - en
AB  - The parametric stereo coding exploiting phase parameters in a bit-efficient way is a part of MPEG-D USAC (Unified Speech and Audio Coding) standard. This paper describes the down-mixing and up-mixing scheme to further enhance the stereo coding in strong out-of-phase or near out-of-phase signals. The conventional down-mixing as a sum of left and right channel for parametric stereo coding has the potential problems, phase cancellation in out-of-phase signals which results in audible artifacts. This paper proposes the phase alignment by estimated overall phase difference (OPD) parameter and inter-channel phase difference (IPD) parameter. Furthermore, this paper describes the phase modification to minimize the phase discontinuity of down-mixed signal by scaling the size of the stereo channels.
ER  -