SPOOFING COUNTERMEASURES TO PROTECT AUTOMATIC SPEAKER VERIFICATION FROM VOICE CONVERSION

Federico Alegre (1) , Asmaa Amehraye (1) , Nicholas Evans (1)

1 Eurecom [Sophia Antipolis]

This paper presents a new countermeasure for the protection of automatic speaker verification systems from spoofed, converted voice signals. The new countermeasure exploits the common shift applied to the spectral slope of consecutive speech frames involved in the mapping of a spoofer's voice signal towards a statistical model of a given target. While the countermeasure exploits prior knowledge of the attack in an admittedly unrealistic sense, it is shown to detect almost all spoofed signals which otherwise provoke significant increases in false acceptance. The work also discusses the need for formal evaluations to develop new countermeasures which are less reliant on prior knowledge.

Mots clés: automatic speaker verification; biometrics; spoofing; imposture; countermeasures

Domaines: Traitement du signal et de l'image [eess.SP]; Traitement du signal et de l'image [eess.SP]

Federico Alegre, Asmaa Amehraye, Nicholas Evans. SPOOFING COUNTERMEASURES TO PROTECT AUTOMATIC SPEAKER VERIFICATION FROM VOICE CONVERSION. ICASSP 2013, 38th IEEE International Conference on Acoustics, Speech, and Signal Processing., May 2013, Vancouver, Canada. 5p. ⟨hal-00804543⟩