Feature selection using ant colony optimization for text-independent speaker verification system

Authors:
Javad Sohafi-Bonab;Mehdi Hosseinzadeh Aghdam
Affiliations:
Department of Computer Engineering, Islamic Azad University, Bonab, Iran;Department of Computer Engineering & IT, Payame Noor University, Bonab, Iran
Venue:
ISICA'10 Proceedings of the 5th international conference on Advances in computation and intelligence
Year:
2010

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Abstract

With the growing trend toward remote security verification procedures for telephone banking, biometric security measures and similar applications, automatic speaker verification (ASV) has received a lot of attention in recent years. The complexity of ASV system and its verification time depends on the number of feature vectors, their dimensionality, the complexity of the speaker models and the number of speakers. In this paper, we concentrate on optimizing dimensionality of feature space by selecting relevant features. It presents another method that is based on ant colony optimization (ACO). The performance of the proposed algorithm is compared to the performance of genetic algorithm on the task of feature selection in TIMIT corpora. The results of experiments indicate that with the optimized feature set, the performance of the ASV system is improved.