Development and evaluation of online text-independent speaker verification system for remote person authentication

Authors:
Debmalya Chakrabarty;S. R. Prasanna;Rohan Kumar Das
Affiliations:
Department of Electronics and Electrical Engineering, Indian Institute of Technology Guwahati (IIT), Guwahati, India 781039;Department of Electronics and Electrical Engineering, Indian Institute of Technology Guwahati (IIT), Guwahati, India 781039;Department of Electronics and Electrical Engineering, Indian Institute of Technology Guwahati (IIT), Guwahati, India 781039
Venue:
International Journal of Speech Technology
Year:
2013

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Abstract

In this paper an online text-independent speaker verification system developed at IIT Guwahati under multivariability condition for remote person authentication is described. The system is developed on a voice server accessible via telephone network using an interactive voice response (IVR) system in which both enrollment and testing can be done online. The speaker verification system is developed using Mel-Frequency Cepstral Coefficients (MFCC) for feature extraction and Gaussian Mixture Model--Universal Background Model (GMM-UBM) for modeling. The performance of the system under multi-variable condition is evaluated using online enrollments and testing from the subjects. The evaluation of the system helps in understanding the impact of several well known issues related to speaker verification such as the effect of environment noise, duration of test speech, robustness of the system against playing recorded speech etc. in an online system scenario. These issues need to be taken care for the development and deployment of speaker verification system in real life applications.