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http://dx.doi.org/10.6109/jkiice.2010.14.3.613

A Phase-related Feature Extraction Method for Robust Speaker Verification  

Kwon, Chul-Hong (대전대학교 정보통신공학과)
Publication Information
Journal of the Korea Institute of Information and Communication Engineering / v.14, no.3, 2010 , pp. 613-620 More about this Journal
Abstract
Additive noise and channel distortion strongly degrade the performance of speaker verification systems, as it introduces distortion of the features of speech. This distortion causes a mismatch between the training and recognition conditions such that acoustic models trained with clean speech do not model noisy and channel distorted speech accurately. This paper presents a phase-related feature extraction method in order to improve the robustness of the speaker verification systems. The instantaneous frequency is computed from the phase of speech signals and features from the histogram of the instantaneous frequency are obtained. Experimental results show that the proposed technique offers significant improvements over the standard techniques in both clean and adverse testing environments.
Keywords
speaker verification; robustness; additive noise; channel mismatch; phase-related feature extraction;
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