Title :
Improvements in Factor Analysis Based Speaker Verification
Author :
Kenny, Patrick ; Boulianne, Gilles ; Ouellet, Pierre ; Dumouchel, Pierre
Author_Institution :
Centre de Recherche Inf. de Montreal, Que.
Abstract :
We present the results of speaker verification experiments conducted on the NIST 2005 evaluation data using a factor analysis of speaker and session variability in 6 telephone speech corpora distributed by the Linguistic Data Consortium. We demonstrate the effectiveness of zt-norm score normalization and a new decision criterion for speaker recognition which can handle large numbers of t-norm speakers and large numbers of speaker factors at little computational cost. The best result we obtained was a detection cost of 0.016 on the core condition (all trials) of the evaluation
Keywords :
speaker recognition; Linguistic Data Consortium; factor analysis; speaker verification; telephone speech corpora; zt-norm score normalization; Computational efficiency; Costs; Covariance matrix; Loudspeakers; NIST; Speaker recognition; Speech analysis; Telephony; Topology; Uncertainty;
Conference_Titel :
Acoustics, Speech and Signal Processing, 2006. ICASSP 2006 Proceedings. 2006 IEEE International Conference on
Conference_Location :
Toulouse
Print_ISBN :
1-4244-0469-X
DOI :
10.1109/ICASSP.2006.1659970