Enhanced Stereo Coding with Phase Parameters for MPEG Unified Speech and Audio Coding

Kim J, Oh E, Robilliard J. Enhanced Stereo Coding with Phase Parameters for MPEG Unified Speech and Audio Coding. In: AES Convention 127. Audio Engineering Society; 2009. Paper 7875. Available from: https://aes.org/publications/elibrary-page/?id=15070

@inproceedings{Kim2009_15070,
  author = {Kim, JungHoe and Oh, Eunmi and Robilliard, Julien},
  title = {{Enhanced Stereo Coding with Phase Parameters for MPEG Unified Speech and Audio Coding}},
  booktitle = {AES Convention 127},
  note = {Paper 7875},
  year = {2009},
  month = oct,
  publisher = {Audio Engineering Society},
  url = {https://aes.org/publications/elibrary-page/?id=15070}
}

TY  - CPAPER
TI  - Enhanced Stereo Coding with Phase Parameters for MPEG Unified Speech and Audio Coding
AU  - Kim, JungHoe
AU  - Oh, Eunmi
AU  - Robilliard, Julien
T2  - AES Convention 127
M1  - Paper 7875
PY  - 2009
DA  - 2009/10/06
UR  - https://aes.org/publications/elibrary-page/?id=15070
PB  - Audio Engineering Society
LA  - en
AB  - The proposed technology is concerned with a bit-efficient way to deliver phase information. This technology is to encode only inter-channel phase difference (IPD) parameter and to estimate overall phase difference (OPD) parameter at the decoder with transmitted inter-channel phase difference and channel level difference. The proposed technology reduces the bitrate for phase parameters compared to the case that both IPD parameters and OPD parameters are transmitted as specified in MPEG Parametric Stereo. The entropy coding scheme for phase parameters is improved utilizing the wrapping property of the phase parameters. We introduce phase smoothing at the decoder and adaptive control of quantization precision for phase parameters to minimize annoying artifact due to abrupt changes of quantized phase parameters. The proposed phase coding can improve stereo sound quality significantly and it was accepted as a part of MPEG-D USAC (Unified Speech and Audio Coding) standard.
ER  -