Session variability in speaker recognition is a well recognized phenomena, but poorly understood largely due to a dearth of robust longitudinal data. The current study uses a large, longterm speaker database to quantify both speaker variability changes within a conversation and the impact of speaker variability changes over the long term (3 years). Results demonstrate that 1) change in accuracy over the course of a conversation is statistically very robust and 2) that the aging effect over three years is statistically negligible. Finally we demonstrate that voice change during the course of a conversation is, in large part, comparable across sessions.
Bibliographic reference. Lawson, A. D. / Stauffer, A. R. / Smolenski, B. Y. / Pokines, B. B. / Leonard, M. / Cupples, E. J. (2009): "Long term examination of intra-session and inter-session speaker variability", In INTERSPEECH-2009, 2899-2902.