Adaptive Optimization of Interchannel Coherence with Stereo and Surround Audio Content

Vilkamo J, Pulkki V. Adaptive Optimization of Interchannel Coherence with Stereo and Surround Audio Content. J Audio Eng Soc. 2014;62(12):861-869. doi:10.17743/jaes.2014.0046

@article{Vilkamo2014_17559,
  author = {Vilkamo, Juha and Pulkki, Ville},
  title = {{Adaptive Optimization of Interchannel Coherence with Stereo and Surround Audio Content}},
  journal = {Journal of the Audio Engineering Society},
  volume = {62},
  number = {12},
  pages = {861--869},
  year = {2014},
  month = dec,
  publisher = {Audio Engineering Society},
  doi = {10.17743/jaes.2014.0046},
  url = {https://doi.org/10.17743/jaes.2014.0046}
}

TY  - JOUR
TI  - Adaptive Optimization of Interchannel Coherence with Stereo and Surround Audio Content
AU  - Vilkamo, Juha
AU  - Pulkki, Ville
T2  - Journal of the Audio Engineering Society
J2  - J. Audio Eng. Soc.
VL  - 62
IS  - 12
SP  - 861
EP  - 869
PY  - 2014
DA  - 2014/12/06
DO  - 10.17743/jaes.2014.0046
UR  - https://doi.org/10.17743/jaes.2014.0046
PB  - Audio Engineering Society
LA  - en
AB  - Interchannel coherence is one of the key features of stereo and multichannel audio that contribute to the perception of width. Certain production techniques, most commonly those using linear coincident microphones, are characterized by excessively high interchannel coherence. Addressing this issue, the authors propose a blind spatial sound enhancement technique that adjusts the coherence in frequency bands while minimizing the change of timbre. The adaptive processing uses regularized least squares optimized mixing, decorrelation, and bypassed onsets. Results of listening experiments show significant improvements by the processing to the attributes width, preference, and overall sound quality without observing adverse effects.
ER  -