8th Annual Conference of the International Speech Communication Association

Antwerp, Belgium
August 27-31, 2007

Influence of Task Duration in Text-Independent Speaker Verification

Benoît Fauve (1), Nicholas Evans (2), Neil Pearson (1), Jean-François Bonastre (2), John Mason (1)

(1) University of Wales Swansea, UK
(2) LIA, France

Short duration tasks for text-independent speaker verification have received relatively little attention when compared to that directed at tasks involving many minutes of speech. In this paper we investigate verification performance on a range of durations from a few seconds to a few minutes. We begin with a state-of-the-art GMM-based system operating on a few minutes of speech per person and show that the same system is suboptimal on short (10 seconds) speech recordings. In particular we highlight that optimal frame selection exhibits a dependency on overall duration. This work sheds some light on the difficulties of transposing recent and important techniques such as SVM-NAP to the short duration tasks.

Full Paper

Bibliographic reference.  Fauve, Benoît / Evans, Nicholas / Pearson, Neil / Bonastre, Jean-François / Mason, John (2007): "Influence of task duration in text-independent speaker verification", In INTERSPEECH-2007, 794-797.