Effect of Speech Transformation on Impostor Acceptance

Author

Matrouf, Driss ; Bonastre, Jean-François ; Fredouille, Corinne

Author_Institution

LIA, Universite d´´Avignon

Volume

1

fYear

2006

fDate

14-19 May 2006

Abstract

This paper investigates the effect of voice transformation on automatic speaker recognition system performance. We focus on increasing the impostor acceptance rate, by modifying the voice of an impostor in order to target a specific speaker. This paper is based on the following idea: in several applications and particularly in forensic situations, it is reasonable to think that some organizations have a knowledge on the speaker recognition method used and could impersonate a given, well known speaker. This paper presents some experiments based on NIST SRE 2005 protocol and a simple impostor voice transformation method. The results show that this simple voice transformation allows a drastic increase of the false acceptance rate, without a degradation of the natural aspect of the voice

Keywords

Gaussian processes; filtering theory; speech processing; speech recognition; GMM; Gaussian-dependent filtering technique; automatic speaker recognition system; impostor acceptance; speech transformation; text-independent speaker detection systems; Authentication; Biometrics; Degradation; Forensics; NIST; Protocols; Speaker recognition; Speech; System performance; Testing;

fLanguage

English

Publisher

ieee

Conference_Titel

Acoustics, Speech and Signal Processing, 2006. ICASSP 2006 Proceedings. 2006 IEEE International Conference on

Conference_Location

Toulouse

ISSN

1520-6149

Print_ISBN

1-4244-0469-X

Type

conf

DOI

10.1109/ICASSP.2006.1660175

Filename

1660175