Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/21297
Title: A directionally tunable but frequency-invariant beamformer on an acoustic velocity-sensor triad to enhance speech perception
Authors: Wu, YI
Wong, KT 
Yuan, X
Lau, SK
Tang, SK 
Keywords: Acoustic devices
Acoustic noise
Acoustic signal processing
Acoustic wave interference
Array signal processing
Microphone arrays
Speech enhancement
Issue Date: 2012
Publisher: Acoustical Soc Amer Amer Inst Physics
Source: Journal of the acoustical society of America, 2012, v. 131, no. 5, p. 3891-3902 How to cite?
Journal: Journal of the Acoustical Society of America 
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.
URI: http://hdl.handle.net/10397/21297
ISSN: 0001-4966
DOI: 10.1121/1.3701991
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