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LOZANO DÍEZ, A. SILNOVA, A. PULUGUNDLA, B. ROHDIN, J. VESELÝ, K. BURGET, L. PLCHOT, O. GLEMBEK, O. NOVOTNÝ, O. MATĚJKA, P.
Original Title
BUT Text-Dependent Speaker Verification System for SdSV Challenge 2020
Type
conference paper
Language
English
Original Abstract
In this paper, we present the winning BUT submission for the text-dependent task of the SdSV challenge 2020. Given the large amount of training data available in this challenge, we explore successful techniques from text-independent systems in the text-dependent scenario. In particular, we trained x-vector extractors on both in-domain and out-of-domain datasets and combine them with i-vectors trained on concatenated MFCCs and bottleneck features, which have proven effective for the text-dependent scenario. Moreover, we proposed the use of phrase-dependent PLDA backend for scoring and its combination with a simple phrase recognizer, which brings up to 63% relative improvement on our development set with respect to using standard PLDA. Finally, we combine our different i-vector and x-vector based systems using a simple linear logistic regression score level fusion, which provides 28% relative improvement on the evaluation set with respect to our best single system.
Keywords
text-dependent speaker verification, phrasedependent PLDA, phrase recognizer
Authors
LOZANO DÍEZ, A.; SILNOVA, A.; PULUGUNDLA, B.; ROHDIN, J.; VESELÝ, K.; BURGET, L.; PLCHOT, O.; GLEMBEK, O.; NOVOTNÝ, O.; MATĚJKA, P.
Released
25. 10. 2020
Publisher
International Speech Communication Association
Location
Shanghai
ISBN
1990-9772
Periodical
Proceedings of Interspeech
Year of study
2020
Number
10
State
French Republic
Pages from
761
Pages to
765
Pages count
5
URL
https://www.isca-speech.org/archive/Interspeech_2020/pdfs/2882.pdf
BibTex
@inproceedings{BUT168145, author="Alicia {Lozano Díez} and Anna {Silnova} and Bhargav {Pulugundla} and Johan Andréas {Rohdin} and Karel {Veselý} and Lukáš {Burget} and Oldřich {Plchot} and Ondřej {Glembek} and Ondřej {Novotný} and Pavel {Matějka}", title="BUT Text-Dependent Speaker Verification System for SdSV Challenge 2020", booktitle="Proceedings of the Annual Conference of the International Speech Communication Association, INTERSPEECH", year="2020", journal="Proceedings of Interspeech", volume="2020", number="10", pages="761--765", publisher="International Speech Communication Association", address="Shanghai", doi="10.21437/Interspeech.2020-2882", issn="1990-9772", url="https://www.isca-speech.org/archive/Interspeech_2020/pdfs/2882.pdf" }