Automotive three-microphone voice activity detector and noise-canceller
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Date
2005
DOI
Open Access Location
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Publisher
Massey University
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Abstract
This paper addresses issues in improving hands-free speech recognition performance in car
environments. A three-microphone array has been used to form a beamformer with leastmean
squares (LMS) to improve Signal to Noise Ratio (SNR). A three-microphone array
has been paralleled to a Voice Activity Detection (VAD). The VAD uses time-delay
estimation together with magnitude-squared coherence (MSC).
Description
Keywords
Noise cancellation, Beamformer, Speech recognition system, Voice activity detection (VAD)
Citation
Qr, Z., Moir, T.J. (2005), Automotive three-microphone voice activity detector and noise-canceller, Research Letters in the Information and Mathematical Sciences, 7, 147-155