Robustness of speaker recognition from noisy speech samples and mismatched languages
Ahmed H. Y. Al-Noori, Francis F. Li, Philip J. Duncan · University of Salford Institutional Repository (University of Salford) · 2016
Speaker recognition systems can typically attain high performance in ideal conditions. However, significant degradations in accuracy are found in channel-mismatched scenarios. Non-stationary environmental noises and their variations are listed at the top of speaker recognition challenges. Gammtone frequency cepstral coefficient method (GFCC) has been developed to improve the robustness of speaker recognition. This paper presents systematic comparisons between performance of GFCC and conventional MFCC based speaker verification systems with a purposely collected noisy speech data set. Furthermore, the current work extends the experiments to include investigations into language independency features in recognition phases. The results show that GFCC has better verification performance in noisy environments than MFCC. However, GFCC show more sensitivity to language mismatch between enrolment and recognition phase.