Faculty of Information Technology, BUT

Publication Details

Discriminatively Trained i-vector Extractor for Speaker Verification

GLEMBEK Ondřej, BURGET Lukáš, BRÜMMER Niko, PLCHOT Oldřich and MATĚJKA Pavel. Discriminatively Trained i-vector Extractor for Speaker Verification. In: Proceedings of Interspeech 2011. Florence: International Speech Communication Association, 2011, pp. 137-140. ISBN 978-1-61839-270-1. ISSN 1990-9772.
Czech title
Diskriminativně trénovaný extraktor i-vektorů pro ověřování mluvčího
Type
conference paper
Language
english
Authors
Glembek Ondřej, Ing., Ph.D. (DCGM FIT BUT)
Burget Lukáš, doc. Ing., Ph.D. (DCGM FIT BUT)
Brümmer Niko (Agnitio)
Plchot Oldřich, Ing., Ph.D. (DCGM FIT BUT)
Matějka Pavel, Ing., Ph.D. (DCGM FIT BUT)
URL
Keywords
speaker verification, i-vectors, PLDA, discriminative training
Abstract
We have proposed a technique for discriminative training of the i-vector extractor parameters using cross-entropy as the error function. We have applied the technique both to the original i-vector extractor and to its simplified version. In both cases, the discriminative training was effective, giving higher relative improvement in the simplified case.
Annotation
We propose a strategy for discriminative training of the ivector extractor in speaker recognition. The original i-vector extractor training was based on the maximum-likelihood generative modeling, where the EM algorithm was used. In our approach, the i-vector extractor parameters are numerically optimized to minimize the discriminative cross-entropy error function. Two versions of the i-vector extraction are studied-the original approach as defined for Joint Factor Analysis, and the simplified version, where orthogonalization of the i-vector extractor matrix is performed.
Published
2011
Pages
137-140
Journal
Proceedings of Interspeech, vol. 2011, no. 8, ISSN 1990-9772
Proceedings
Proceedings of Interspeech 2011
Conference
Interspeech 2011, Florence Italy, IT
ISBN
978-1-61839-270-1
Publisher
International Speech Communication Association
Place
Florence, IT
BibTeX
@INPROCEEDINGS{FITPUB9752,
   author = "Ond\v{r}ej Glembek and Luk\'{a}\v{s} Burget and Niko Br\"{u}mmer and Old\v{r}ich Plchot and Pavel Mat\v{e}jka",
   title = "Discriminatively Trained i-vector Extractor for Speaker Verification",
   pages = "137--140",
   booktitle = "Proceedings of Interspeech 2011",
   journal = "Proceedings of Interspeech",
   volume = 2011,
   number = 8,
   year = 2011,
   location = "Florence, IT",
   publisher = "International Speech Communication Association",
   ISBN = "978-1-61839-270-1",
   ISSN = "1990-9772",
   language = "english",
   url = "https://www.fit.vut.cz/research/publication/9752"
}
Back to top