A Fixed Beamforming Based Approach for Stereophonic Audio-Conference Systems

Pirro M, Squartini S, Piazza F. A Fixed Beamforming Based Approach for Stereophonic Audio-Conference Systems. In: AES Convention 131. Audio Engineering Society; 2011. Paper 8554. Available from: https://aes.org/publications/elibrary-page/?id=16080

@inproceedings{Pirro2011_16080,
  author = {Pirro, Matteo and Squartini, Stefano and Piazza, Francesco},
  title = {{A Fixed Beamforming Based Approach for Stereophonic Audio-Conference Systems}},
  booktitle = {AES Convention 131},
  note = {Paper 8554},
  year = {2011},
  month = oct,
  publisher = {Audio Engineering Society},
  url = {https://aes.org/publications/elibrary-page/?id=16080}
}

TY  - CPAPER
TI  - A Fixed Beamforming Based Approach for Stereophonic Audio-Conference Systems
AU  - Pirro, Matteo
AU  - Squartini, Stefano
AU  - Piazza, Francesco
T2  - AES Convention 131
M1  - Paper 8554
PY  - 2011
DA  - 2011/10/06
UR  - https://aes.org/publications/elibrary-page/?id=16080
PB  - Audio Engineering Society
LA  - en
AB  - Hands-free communications systems require to primarily reduce the impact of the inevitably occurring acoustic echo. Moreover, in the recent past, a certain attention has been devoted to algorithmic frameworks able to provide stereophonic acoustic rendering and so augmenting the pleasantness of the audio-conference experience. In this paper the authors propose an optimally designed fixed Beamformer (BF) based solution for Stereophonic Acoustic Echo Cancellation (SAEC), with a twofold objective in mind: reducing the echo power and maximize the stereophonic spatial feeling. Up to the author's knowledge this is new to the literature and the achieved experimental results seem to confirm the effectiveness of the approach. It must be underlined, on purpose, that preliminary subjective listening tests have been carried out to evaluate the attainable audio stereo-recording quality. Moreover, the proposed solution allows to significantly reduce the overall computational cost required by the SAEC framework: indeed BF implementation asks for few extra filtering operations with respect to the baseline approach from one hand but make the usage of the decorrelation module nonessential.
ER  -