Abstract:In this paper, a Voice Activity Detector (VAD) is proposed for smart hearing protection applications where speech is to get through the hearing protector while ambient noise is to be blocked out. The VAD calculates a short-term statistical assessment of the temporal envelopes within different frequency bands. This assessment uses the Inter-Quartile Range (IQR) and reflects the dispersion of the envelopes' magnitudes. The VAD's decision is made using two threshold comparison rules and a hangover scheme triggere… Show more
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