AGNITIO's Speaker Recognition System for EVALITA 2009

AGNITIO's submission for the EVALITA 2009 Speaker Iden- tity Verication Application Track was a fusion of a state-of-the-art JFA system and a new I-Vector system. We briey describe the two systems and their fusion and then highlight the challenging cross-channel con- ditions of this evaluation, where enrollment was via land-line and veri- cation via mobile, or vice versa. Despite the availability of a matched development database of 10 land-line and 10 mobile calls for each of 60 speakers, the error-rates for cross-channel verications remained high.

[1]  Douglas A. Reynolds,et al.  Speaker Verification Using Adapted Gaussian Mixture Models , 2000, Digit. Signal Process..

[2]  Alvin F. Martin,et al.  NIST 2008 speaker recognition evaluation: performance across telephone and room microphone channels , 2009, INTERSPEECH.

[3]  Lukás Burget,et al.  Investigation into variants of joint factor analysis for speaker recognition , 2009, INTERSPEECH.

[4]  Niko Brümmer,et al.  Application-independent evaluation of speaker detection , 2006, Comput. Speech Lang..

[5]  Guido Aversano,et al.  EVALITA 2009 Speaker Identity Verication \Application" Track |Organizer's Report| , 2009 .

[6]  Sridha Sridharan,et al.  Feature warping for robust speaker verification , 2001, Odyssey.

[7]  Patrick Kenny,et al.  Joint Factor Analysis Versus Eigenchannels in Speaker Recognition , 2007, IEEE Transactions on Audio, Speech, and Language Processing.

[8]  David A. van Leeuwen,et al.  Fusion of Heterogeneous Speaker Recognition Systems in the STBU Submission for the NIST Speaker Recognition Evaluation 2006 , 2007, IEEE Transactions on Audio, Speech, and Language Processing.

[9]  Patrick Kenny,et al.  Support vector machines versus fast scoring in the low-dimensional total variability space for speaker verification , 2009, INTERSPEECH.

[10]  Patrick Kenny,et al.  The role of speaker factors in the NIST extended data task , 2008, Odyssey.

[11]  Patrick Kenny,et al.  A Study of Interspeaker Variability in Speaker Verification , 2008, IEEE Transactions on Audio, Speech, and Language Processing.