ODYSSEY 2004 - The Speaker and Language Recognition Workshop

May 31 - June 3, 2004
Toledo, Spain

Compensation of Utterance Length for Speaker Verification

Jason Pelecanos, Upendra Chaudhari, Ganesh Ramaswamy

Conversational Biometrics Group, IBM Research, T.J. Watson Research Center, Yorktown Heights, NY, USA

The effect of utterance length on the estimation of the likelihood of a speaker has previously seen a brief treatment in past works. In many speaker recognition evaluations, the utterances were typically configured to have a relatively consistent length. This paper investigates the effect of varying enrollment and test utterance lengths on the score distributions and consequently their effect on performance. In addition, this study examines the mixing of a number of variable training length utterance trials in a single evaluation. To address this problem, a parametric solution using splines is proposed and is shown to significantly reduce the error in the conducted experiments.

Full Paper

Bibliographic reference.  Pelecanos, Jason / Chaudhari, Upendra / Ramaswamy, Ganesh (2004): "Compensation of utterance length for speaker verification", In ODYS-2004, 161-164.