Direct-Diffuse Decomposition of Multichannel Signals Using a System of Pairwise Correlations

Thompson J, Smith B, Warner A, Jot JM. Direct-Diffuse Decomposition of Multichannel Signals Using a System of Pairwise Correlations. In: AES Convention 133. Audio Engineering Society; 2012. Paper 8807. Available from: https://aes.org/publications/elibrary-page/?id=16549

@inproceedings{Thompson2012_16549,
  author = {Thompson, Jeffrey and Smith, Brandon and Warner, Aaron and Jot, Jean-Marc},
  title = {{Direct-Diffuse Decomposition of Multichannel Signals Using a System of Pairwise Correlations}},
  booktitle = {AES Convention 133},
  note = {Paper 8807},
  year = {2012},
  month = oct,
  publisher = {Audio Engineering Society},
  url = {https://aes.org/publications/elibrary-page/?id=16549}
}

TY  - CPAPER
TI  - Direct-Diffuse Decomposition of Multichannel Signals Using a System of Pairwise Correlations
AU  - Thompson, Jeffrey
AU  - Smith, Brandon
AU  - Warner, Aaron
AU  - Jot, Jean-Marc
T2  - AES Convention 133
M1  - Paper 8807
PY  - 2012
DA  - 2012/10/06
UR  - https://aes.org/publications/elibrary-page/?id=16549
PB  - Audio Engineering Society
LA  - en
AB  - Decomposing an arbitrary audio signal into direct and diffuse components is useful for applications such as spatial audio coding, spatial format conversion, binaural rendering, and spatial audio enhancement. This paper describes direct-diffuse decomposition methods for multichannel signals using a linear system of pairwise correlation estimates. The expected value of a correlation coefficient is analytically derived from a signal model with known direct and diffuse energy levels. It is shown that a linear system can be constructed from pairwise correlation coefficients to derive estimates of the Direct Energy Fraction (DEF) for each channel of a multichannel signal. Two direct-diffuse decomposition methods are described that utilize the DEF estimates within a time-frequency analysis-synthesis framework.
ER  -