Robust Representation of Spatial Sound in Stereo-to-Multichannel Upmix

Jeon SW, Park YC, Lee SP, Youn DH. Robust Representation of Spatial Sound in Stereo-to-Multichannel Upmix. In: AES Convention 128. Audio Engineering Society; 2010. Paper 7976. Available from: https://aes.org/publications/elibrary-page/?id=15273

@inproceedings{Jeon2010_15273,
  author = {Jeon, Se-Woon and Park, Young-Cheol and Lee, Seok-Pil and Youn, Dae-Hee},
  title = {{Robust Representation of Spatial Sound in Stereo-to-Multichannel Upmix}},
  booktitle = {AES Convention 128},
  note = {Paper 7976},
  year = {2010},
  month = may,
  publisher = {Audio Engineering Society},
  url = {https://aes.org/publications/elibrary-page/?id=15273}
}

TY  - CPAPER
TI  - Robust Representation of Spatial Sound in Stereo-to-Multichannel Upmix
AU  - Jeon, Se-Woon
AU  - Park, Young-Cheol
AU  - Lee, Seok-Pil
AU  - Youn, Dae-Hee
T2  - AES Convention 128
M1  - Paper 7976
PY  - 2010
DA  - 2010/05/06
UR  - https://aes.org/publications/elibrary-page/?id=15273
PB  - Audio Engineering Society
LA  - en
AB  - This paper presents a stereo-to-multichannel upmix algorithm based on source separation method. In the conventional upmix algorithms, panning source and ambient components are decomposed or separated by adaptive algorithm, i.e. least-squares (LS) or least-mean-square (LMS). Separation performance of those algorithms is easily influenced by primary to ambient energy ratio (PAR). Since PAR is time-varying, it causes the energy fluctuation of separated sound sources. To prevent this problem, we propose a robust separation algorithm using pseudo inverse matrix. And we propose a novel post-scaling algorithm to compensate for the influence of interference with considering desired multichannel format. Performance of the proposed upmix algorithm is confirmed by subjective listening test in ITU 3/2 format.
ER  -