Journal article
The Effect of a Voice Activity Detector on the Speech Enhancement
A multimicrophone speech enhancement algorithm for binaural hearing aids that preserves interaural time delays was proposed recently. The algorithm is based on multichannel Wiener filtering and relies on a voice activity detector (VAD) for estimation of second-order statistics. Here, the effect of a VAD on the speech enhancement of this algorithm was evaluated using an envelopebased VAD, and the performance was compared to that achieved using an ideal error-free VAD.
The performance was considered for stationary directional noise and nonstationary diffuse noise interferers at input SNRs from −10 to +5 dB. Intelligibilityweighted SNR improvements of about 20 dB and 6 dB were found for the directional and diffuse noise, respectively. No large degradations (
Language: | English |
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Publisher: | Springer International Publishing |
Year: | 2010 |
Pages: | 1-12 |
ISSN: | 16874722 and 16874714 |
Types: | Journal article |
DOI: | 10.1155/2010/840294 |
ORCIDs: | Dau, Torsten |