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http://dx.doi.org/10.7776/ASK.2014.33.2.139

A Single Channel Voice Activity Detection for Noisy Environments Using Wavelet Packet Decomposition and Teager Energy  

Koo, Boneung (경기대학교 전자공학과)
Publication Information
The Journal of the Acoustical Society of Korea / v.33, no.2, 2014 , pp. 139-145 More about this Journal
Abstract
In this paper, a feature parameter is obtained by applying the Teager energy to the WPD(Wavelet Packet Decomposition) coefficients. The threshold value is obtained based on means and standard deviations of nonspeech frames. Experimental results by using TIMIT speech and NOISEX-92 noise databases show that the proposed algorithm is superior to the typical VAD algorithm. The ROC(Receiver Operating Characteristics) curves are used to compare performance of VAD's for SNR values of ranging from 10 to -10 dB.
Keywords
Voice activity detection; Speech pause detection; Teager energy; Wavelet packet decomposition; Noise-robustness; Single channel;
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