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Lookup NU author(s): Musab Al-Kaltakchi,
Dr Wai Lok Woo,
Emeritus Professor Satnam Dlay,
Professor Jonathon Chambers
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In this paper, a new combination of features and normalization methods is investigated for robust biometric speaker identification. Mel Frequency Cepstral Coefficients (MFCC) are efficient for speaker identification in clean speech while Power Normalized Cepstral Coefficients (PNCC) features are robust for noisy environments. Therefore, combining both features together is better than taking each one individually. In addition, Cepstral Mean and Variance Normalization (CMVN) and Feature Warping (FW) arc used to mitigate possible channel effects and the handset mismatch in voice measurements. Speaker modelling is based on a Gaussian Mixture Model (GMM) with a universal background model (UBM). Coupled parameter learning between the speaker models and UBM is utilized to improve performance. Finally, maximum, mean and weighted sum fusions of model scores are used to enhance the Speaker Identification Accuracy (SIA). Verifications conducted on the TIMIT database with and without noise confirm performance improvement.
Author(s): Al-Kaltakchi MTS, Woo WL, Dlay SS, Chambers JA
Publication type: Conference Proceedings (inc. Abstract)
Publication status: Published
Conference Name: 2016 4th International Workshop on Biometrics and Forensics (IWBF)
Year of Conference: 2016
Online publication date: 11/04/2016
Acceptance date: 02/04/2016