Circular harmonic processing with an ad-hoc smartphone array for speech enhancement

Bountourakis V, Vryzas N, Dimoulas C. Circular harmonic processing with an ad-hoc smartphone array for speech enhancement. In: AES Convention 152. Audio Engineering Society; 2022. Paper 10589. Available from: https://aes.org/publications/elibrary-page/?id=21702

@inproceedings{Bountourakis2022_21702,
  author = {Bountourakis, Vasileios and Vryzas, Nikolaos and Dimoulas, Charalampos},
  title = {{Circular harmonic processing with an ad-hoc smartphone array for speech enhancement}},
  booktitle = {AES Convention 152},
  note = {Paper 10589},
  year = {2022},
  month = may,
  publisher = {Audio Engineering Society},
  url = {https://aes.org/publications/elibrary-page/?id=21702}
}

TY  - CPAPER
TI  - Circular harmonic processing with an ad-hoc smartphone array for speech enhancement
AU  - Bountourakis, Vasileios
AU  - Vryzas, Nikolaos
AU  - Dimoulas, Charalampos
T2  - AES Convention 152
M1  - Paper 10589
PY  - 2022
DA  - 2022/05/06
UR  - https://aes.org/publications/elibrary-page/?id=21702
PB  - Audio Engineering Society
LA  - en
AB  - A circular microphone array may be assembled on the spot by combining the built-in microphones of several smartphones in a circular layout. The present work investigates different designs of such ad-hoc smartphone arrays that would allow the implementation of spatial audio techniques formulated in the circular harmonic domain. The tested techniques include circular harmonic beamforming for Direction-Of-Arrival estimation and noise reduction, as well as spatial post-filters for additional background noise suppression. The evaluation of the different designs is performed using a simulated dataset of a multi-speaker event. The comparisons are done with objective metrics, as well as with a subjective listening test.
ER  -