B-Format Decoding Based on Adaptive Beamforming

Favrot A, Faller C. B-Format Decoding Based on Adaptive Beamforming. In: AES Convention 146. Audio Engineering Society; 2019. Paper 10180. Available from: https://aes.org/publications/elibrary-page/?id=20313

@inproceedings{Favrot2019_20313,
  author = {Favrot, Alexis and Faller, Christof},
  title = {{B-Format Decoding Based on Adaptive Beamforming}},
  booktitle = {AES Convention 146},
  note = {Paper 10180},
  year = {2019},
  month = mar,
  publisher = {Audio Engineering Society},
  url = {https://aes.org/publications/elibrary-page/?id=20313}
}

TY  - CPAPER
TI  - B-Format Decoding Based on Adaptive Beamforming
AU  - Favrot, Alexis
AU  - Faller, Christof
T2  - AES Convention 146
M1  - Paper 10180
PY  - 2019
DA  - 2019/03/06
UR  - https://aes.org/publications/elibrary-page/?id=20313
PB  - Audio Engineering Society
LA  - en
AB  - B-Format signals can be decoded into signals with first order directivity. For stereo and multichannel decoding it would be desirable to have more channel separation than what is achievable by first order. DirAC (directional audio coding) and HARPEX (high resolution plane wave expansion) achieve higher channel separation by means of using a parametric B-Format model to estimate plane waves and diffuse sound, and adaptively rendering those. A limitation is that plane wave and diffuse models are too simple to represent complex B-Format signals. We propose a B-Format decoder, where each channel is generated by an independent adaptive B-Format beamformer. Each beam is generated independently of the other beams, circumventing the limitation when using a single B-Format signal model.
ER  -