Comparison of feature extraction and normalization methods for speaker recognition using grid-audiovisual database

Musab T. S. Al-Kaltakchi (Mustansiriyah University)
Haithem Abd Al-Raheem Taha (Mustansiriyah University)
Mohanad Abd Shehab (Mustansiriyah University)
Mohamed A.M. Abdullah (Ninevah University)

Indonesian Journal of Electrical Engineering and Computer Science
Vol 18, No 2: May 2020

In this paper, different feature extraction and feature normalization methods are investigated for speaker recognition. With a view to give a good representation of acoustic speech signals, Power Normalized Cepstral Coefficients (PNCCs) and Mel Frequency Cepstral Coefficients (MFCCs) are employed for feature extraction. Then, to mitigate the effect of linear channel, Cepstral Mean-Variance Normalization (CMVN) and feature warping are utilized. The current paper investigates Text-independent speaker identification system by using 16 coefficients from both the MFCCs and PNCCs features. Eight different speakers are selected from the GRID-Audiovisual database with two females and six males. The speakers are modeled using the coupling between the Universal Background Model and Gaussian Mixture Models (GMM-UBM) in order to get a fast scoring technique and better performance. The system shows 100% in terms of speaker identification accuracy. The results illustrated that PNCCs features have better performance compared to the MFCCs features to identify females compared to male speakers. Furthermore, feature wrapping reported better performance compared to the CMVN method.