Qr, ZMoir, T.J.2013-05-152013-05-152005Qr, Z., Moir, T.J. (2005), Automotive three-microphone voice activity detector and noise-canceller, Research Letters in the Information and Mathematical Sciences, 7, 147-1551175-2777http://hdl.handle.net/10179/4443This 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).enNoise cancellationBeamformerSpeech recognition systemVoice activity detection (VAD)Article