Speaker verification using composite reference

This paper examines the effectiveness of parametric representation of speech derived from the linear prediction model using the new concept of composite reference for speaker verification. In the proposed verification system the combined information of the identity of several speakers is given. That is, the existence of an overall reference contour is assumed which contains the information corresponding to the identities of several speakers in a given population. The verification task consists of authenticating an individual´s claimed identity by an LPC analysis of his speech. A time warping procedure based strictly on correlation also has been incorporated. Automatic verification based on the predictor and parcor coefficients and using composite reference yielded a verification accuracy of about 96 percent.