Voice activity detection using smoothed-fuzzy entropy (smFuzzyEn) and support vector machine

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R. Johny Elton
P. Vasuki
J. Mohanalin
J. S. Gnanasekaran

Abstract

In this paper a novel voice activity detection approach using smoothed fuzzy entropy (smFuzzyEn) feature using support vector machine is proposed. The proposed approach (smFESVM) uses total variation filter and Savitzky-Golay filter to smooth the FuzzyEn feature extracted from the noisy speech signals. Also, convolution of the first order difference of TV filter and noisy fuzzy entropy feature (conFETV') is also proposed. The obtained smoothed feature vectors are further normalized using min-max normalization and the normalized feature vectors train SVM model for speech/non-speech classification. The proposed smFESVM method shows better discrimination of noise and noisy speech when tested under various nonstationary background noises of different signal-to-noise ratio levels. 10 – fold cross validation was used to validate the efficacy of the SVM classifier. The performance of the smFESVM is compared against various algorithms and comparison suggests that the results obtained by the smFESVM is efficient in detecting speech under low SNR conditions with an accuracy of 93.88%.

 

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How to Cite
Elton, R. J., Vasuki, P., Mohanalin, J., & Gnanasekaran, J. S. (2019). Voice activity detection using smoothed-fuzzy entropy (smFuzzyEn) and support vector machine. Journal of Applied Research and Technology, 17(1). https://doi.org/10.22201/icat.16656423.2019.17.1.754
Author Biographies

R. Johny Elton

Department of Electronics and Communication Engineering, K.L.N college of Information Technology, Madurai – 630612, Tamilnadu, India

P. Vasuki

Department of Electronics and Communication Engineering, K.L.N college of Information Technology, Madurai – 630612, Tamilnadu, India

J. Mohanalin

Department of Electrical and Electronics Engineering, College of  Engineering, Pathanapuram, Kerala – 689696, India

J. S. Gnanasekaran

Department of Mechanical Engineering, K.L.N college of Information Technology, Madurai – 630612, Tamilnadu, India