Calibration of Digital Sound Projectors with Scene Uncertainty

Ferguson L, Bates E, O'Dwyer H, Csadi S, Boland FM. Calibration of Digital Sound Projectors with Scene Uncertainty. In: AES Convention 146. Audio Engineering Society; 2019. Paper 10211. Available from: https://aes.org/publications/elibrary-page/?id=20344

@inproceedings{Ferguson2019_20344,
  author = {Ferguson, Luke and Bates, Enda and O'Dwyer, Hugh and Csadi, Sebastian and Boland, Francis M.},
  title = {{Calibration of Digital Sound Projectors with Scene Uncertainty}},
  booktitle = {AES Convention 146},
  note = {Paper 10211},
  year = {2019},
  month = mar,
  publisher = {Audio Engineering Society},
  url = {https://aes.org/publications/elibrary-page/?id=20344}
}

TY  - CPAPER
TI  - Calibration of Digital Sound Projectors with Scene Uncertainty
AU  - Ferguson, Luke
AU  - Bates, Enda
AU  - O'Dwyer, Hugh
AU  - Csadi, Sebastian
AU  - Boland, Francis M.
T2  - AES Convention 146
M1  - Paper 10211
PY  - 2019
DA  - 2019/03/06
UR  - https://aes.org/publications/elibrary-page/?id=20344
PB  - Audio Engineering Society
LA  - en
AB  - This paper addresses the calibration problem for digital sound projection in the context of uncertain scene geometry. The image method is extended to handle uncertainties in the description of reflectors, specifically the distance parameter, relative to the source and/or receiver. Under the assumption that the source is a linear array of loudspeakers parallel with the back wall of a rectangular room, a novel extended image method is applied to compute probability distributions for the beamforming parameters for digital sound projection. The calibration is enriched with information available from probability distributions of the planar reflectors in the scene. Computer simulations are conducted to validate the calibration accuracy and to evaluate the performance of system. The expected deviation from optimum performance is quantified by analyzing the expected soundfield at the receiver position. This paper also highlights the sensitivity of digital sound projectors to measurement errors under certain constrained conditions.
ER  -