A directionally tunable but frequency-invariant beamformer on an acoustic velocity-sensor triad to enhance speech perception

Wu, Yue Ivan; Wong, Kainam Thomas; Yuan, Xin; Lau, Siu Kit; Tang, Shiu Keung

Abstract

Herein investigated are computationally simple microphone-array beamformers that are independent of the frequency-spectra of all signals, all interference, and all noises. These beamformers allow the listener to tune the desired azimuth-elevation "look direction." No prior information is needed of the interference. These beamformers deploy a physically compact triad of three collocated but orthogonally oriented velocity sensors. These proposed schemes' efficacy is verified by a jury test, using simulated data constructed with Mandarin Chinese (a.k.a. Putonghua) speech samples. For example, a desired speech signal, originally at a very adverse signal-to-interference-and-noise power ratio (SINR) of -30 dB, may be processed to become fully intelligible to the jury.

Citation

Wu, Y. I., Wong, K. T., Yuan, X., Lau, S. K., & Tang, S. K. (2012). A directionally tunable but frequency-invariant beamformer on an acoustic velocity-sensor triad to enhance speech perception. The Journal of the Acoustical Society of America, 131(5), 3891-3902. https://doi.org/10.1121/1.3701991

• Journal Article Type: Conference Paper
• Acceptance Date: Mar 23, 2012
• Online Publication Date: May 4, 2012
• Publication Date: May 1, 2012
• Deposit Date: Jul 11, 2022
• Journal: Journal of the Acoustical Society of America
• Print ISSN: 0001-4966
• Publisher: Acoustical Society of America
• Peer Reviewed: Peer Reviewed
• Volume: 131
• Issue: 5
• Pages: 3891-3902
• DOI: https://doi.org/10.1121/1.3701991
• Public URL: https://hull-repository.worktribe.com/output/4015971