Wiener-Based Spatial B-Format Equalization

Favrot A, Faller C. Wiener-Based Spatial B-Format Equalization. J Audio Eng Soc. 2020;68(7/8):488-494. doi:10.17743/jaes.2020.0040

@article{Favrot2020_20885,
  author = {Favrot, Alexis and Faller, Christof},
  title = {{Wiener-Based Spatial B-Format Equalization}},
  journal = {Journal of the Audio Engineering Society},
  volume = {68},
  number = {7/8},
  pages = {488--494},
  year = {2020},
  month = jul,
  publisher = {Audio Engineering Society},
  doi = {10.17743/jaes.2020.0040},
  url = {https://doi.org/10.17743/jaes.2020.0040}
}

TY  - JOUR
TI  - Wiener-Based Spatial B-Format Equalization
AU  - Favrot, Alexis
AU  - Faller, Christof
T2  - Journal of the Audio Engineering Society
J2  - J. Audio Eng. Soc.
VL  - 68
IS  - 7/8
SP  - 488
EP  - 494
PY  - 2020
DA  - 2020/07/06
DO  - 10.17743/jaes.2020.0040
UR  - https://doi.org/10.17743/jaes.2020.0040
PB  - Audio Engineering Society
LA  - en
AB  - Audio corresponding to the moving picture of a virtual reality (VR) camera can be recorded using an A or B-format microphone. The recorded signal is decoded with respect to the look direction for generating binaural or multichannel audio following the visual scene. Postproduction possibilities on given B-format signals are restricted to linear matrixing and filtering, limiting the use of recorded B-format contents. A time-frequency adaptive method is presented, which can apply equalization to different sources (directions) in the B-format without a need for decoding it. The proposed approach estimates direct sound power in each direction to be equalized and applies a single Wiener filter per B-format channel for individually equalizing all desired directions at once.
ER  -