Space-domain cross-pattern coherence post-filter for speech enhancement with linear microphone arrays

Wirler S, Bountourakis V, Pulkki V. Space-domain cross-pattern coherence post-filter for speech enhancement with linear microphone arrays. In: AES Convention 154. Audio Engineering Society; 2023. Paper 10652. Available from: https://aes.org/publications/elibrary-page/?id=22059

@inproceedings{Wirler2023_22059,
  author = {Wirler, Stefan and Bountourakis, Vasileios and Pulkki, Ville},
  title = {{Space-domain cross-pattern coherence post-filter for speech enhancement with linear microphone arrays}},
  booktitle = {AES Convention 154},
  note = {Paper 10652},
  year = {2023},
  month = may,
  publisher = {Audio Engineering Society},
  url = {https://aes.org/publications/elibrary-page/?id=22059}
}

TY  - CPAPER
TI  - Space-domain cross-pattern coherence post-filter for speech enhancement with linear microphone arrays
AU  - Wirler, Stefan
AU  - Bountourakis, Vasileios
AU  - Pulkki, Ville
T2  - AES Convention 154
M1  - Paper 10652
PY  - 2023
DA  - 2023/05/06
UR  - https://aes.org/publications/elibrary-page/?id=22059
PB  - Audio Engineering Society
LA  - en
AB  - This paper evaluates the space-domain cross-pattern coherence (SD-CroPaC) algorithm in speech enhancement applications employing linear microphone arrays. The algorithm computes the normalized cross-spectral density between beamformed signals in the time-frequency domain, which originate from non-overlapping sub-arrays. The resulting post-filter is then applied to the output of another beamformer to suppress interference and background noise. The evaluation was performed with a listening test comprising simulated multi-speaker scenarios. The results clearly show the improved performance achieved by the post-filter compared to a conventional baseline beamformer. Additionally, the listening test results suggest that fine-tuning the filter’s parameters may offer a further performance improvement.
ER  -