Scalable Coding of Three-Dimensional Multichannel Sound - Design of Conversion Matrix and Modeling of Unmasking Phenomenon

Ando A. Scalable Coding of Three-Dimensional Multichannel Sound - Design of Conversion Matrix and Modeling of Unmasking Phenomenon. In: AES Convention 132. Audio Engineering Society; 2012. Paper 8647. Available from: https://aes.org/publications/elibrary-page/?id=16285

@inproceedings{Ando2012_16285,
  author = {Ando, Akio},
  title = {{Scalable Coding of Three-Dimensional Multichannel Sound - Design of Conversion Matrix and Modeling of Unmasking Phenomenon}},
  booktitle = {AES Convention 132},
  note = {Paper 8647},
  year = {2012},
  month = apr,
  publisher = {Audio Engineering Society},
  url = {https://aes.org/publications/elibrary-page/?id=16285}
}

TY  - CPAPER
TI  - Scalable Coding of Three-Dimensional Multichannel Sound - Design of Conversion Matrix and Modeling of Unmasking Phenomenon
AU  - Ando, Akio
T2  - AES Convention 132
M1  - Paper 8647
PY  - 2012
DA  - 2012/04/06
UR  - https://aes.org/publications/elibrary-page/?id=16285
PB  - Audio Engineering Society
LA  - en
AB  - We propose two methods for coding and transmitting three-dimensional multichannel sound signals: scalable coding and transmission, and modeling of the quantization error. The first method converts N-channel sound signals into M-channel basic and (N-M)-channel additional signals using a matrix operation. The matrix is trained by simulated annealing to reduce its condition number and the energy of additional signals. The unmasking artifact may occur when the N-channel signals are restored from the decoded signals using the inverse matrix. The second method estimates the quantization error signals by the polynomial approximation of the decoded signals. Experimental results showed that the combination of both methods could realize a 1.2 Mbps scalable transmission of 22-channel sounds without a notable sound degradation.
ER  -