Paper Abstract and Keywords |
Presentation |
2015-01-22 15:30
Analysis of effects of voice mimicry on speaker verification and acoustic features of the imitated voices Koji Iwano, Taito Sone, Kanako Sakamoto (Tokyo City Univ.) SP2014-134 |
Abstract |
(in Japanese) |
(See Japanese page) |
(in English) |
It is quite important to recognize the vulnerability of speaker verification (SV) systems against voice mimicry attacks and to propose countermeasure methods against them. This paper describes an acoustic feature analysis using imitated speech uttered by non-professional speakers and a performance degradation of an HMM-based SV system by the mimicry attacks using the imitated speech. We collected normal/imitated speech uttered by 6 males and 6 females, and analyzed the cepstral feature changes by the imitation. The analysis results show the tendency that the acoustic features of the speakers' voice significantly change by their efforts of the imitation, whereas the distance of the acoustic features between imitated and target speaker's speech is still large. The experimental results on the SV system performance show that the mimicry attacks increase equal error rates by 1.2 to 2.7 times. These facts indicate that non-professional mimicry attacks rarely succeed in spoofing the SV system and yield actual performance degradations in spite of the situation where there is a large gap of acoustic features between imitated and target speech. |
Keyword |
(in Japanese) |
(See Japanese page) |
(in English) |
Speaker verification / Imitated speech / Voice mimicry attack / Acoustic feature analysis / / / / |
Reference Info. |
IEICE Tech. Rep., vol. 114, no. 411, SP2014-134, pp. 43-48, Jan. 2015. |
Paper # |
SP2014-134 |
Date of Issue |
2015-01-15 (SP) |
ISSN |
Print edition: ISSN 0913-5685 Online edition: ISSN 2432-6380 |
Copyright and reproduction |
All rights are reserved and no part of this publication may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopy, recording, or any information storage and retrieval system, without permission in writing from the publisher. Notwithstanding, instructors are permitted to photocopy isolated articles for noncommercial classroom use without fee. (License No.: 10GA0019/12GB0052/13GB0056/17GB0034/18GB0034) |
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SP2014-134 |
Conference Information |
Committee |
SP |
Conference Date |
2015-01-22 - 2015-01-22 |
Place (in Japanese) |
(See Japanese page) |
Place (in English) |
Juroku Plaza |
Topics (in Japanese) |
(See Japanese page) |
Topics (in English) |
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Paper Information |
Registration To |
SP |
Conference Code |
2015-01-SP |
Language |
Japanese |
Title (in Japanese) |
(See Japanese page) |
Sub Title (in Japanese) |
(See Japanese page) |
Title (in English) |
Analysis of effects of voice mimicry on speaker verification and acoustic features of the imitated voices |
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Keyword(1) |
Speaker verification |
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Imitated speech |
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Voice mimicry attack |
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Acoustic feature analysis |
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1st Author's Name |
Koji Iwano |
1st Author's Affiliation |
Tokyo City University (Tokyo City Univ.) |
2nd Author's Name |
Taito Sone |
2nd Author's Affiliation |
Tokyo City University (Tokyo City Univ.) |
3rd Author's Name |
Kanako Sakamoto |
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Tokyo City University (Tokyo City Univ.) |
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Speaker |
Author-1 |
Date Time |
2015-01-22 15:30:00 |
Presentation Time |
25 minutes |
Registration for |
SP |
Paper # |
SP2014-134 |
Volume (vol) |
vol.114 |
Number (no) |
no.411 |
Page |
pp.43-48 |
#Pages |
6 |
Date of Issue |
2015-01-15 (SP) |