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Paper Abstract and Keywords
Presentation 2018-03-19 13:00
[Poster Presentation] Speaker verification based on non-linear bandwidth extension considering aliasing artifacts for super-wideband applications
Haruna Miyamoto, Sayaka Shiota, Hitoshi Kiya (Tokyo Metropolitan Univ.) EA2017-110 SIP2017-119 SP2017-93
Abstract (in Japanese) (See Japanese page) 
(in English) This paper has two aims that are to propose a novel bandwidth extension (BWE) method considering aliasing artifacts, and to apply various BWE methods to speaker verification to evaluate the effectiveness of the BWE ones. There are bandwidth extension methods not only to enhance narrowband signals but also to adapt signals to super-wideband systems. It has been reported that statistical based BWE approaches can estimate clear wideband and super-wideband signals. Recently, a non-linear BWE method has also been reported as a resynthesis approach. In this paper, it is first pointed out that digital signals generated by the non-linear BWE methods include some aliasing artifacts due to the band limitation to be decided according to the sampling frequency. Next, a new non-linear artificial BWE method, which allows us to avoid the influence of aliasing artifacts, is proposed. Moreover, to evaluate the proposed framework, speaker verification experiments and objective tests, i.e. PESQ and RMS-LSD, are conducted. Especially, experimental results show that speech signals extended to 32 kHz by the proposed framework provide the error reduction of 29.7%, compared with conventional methods.
Keyword (in Japanese) (See Japanese page) 
(in English) non-linear artificial bandwidth extension / aliasing artifacts / speaker verification / PESQ / RMS-LSD / / /  
Reference Info. IEICE Tech. Rep., vol. 117, no. 517, SP2017-93, pp. 51-55, March 2018.
Paper # SP2017-93 
Date of Issue 2018-03-12 (EA, SIP, SP) 
ISSN Print edition: ISSN 0913-5685  Online edition: ISSN 2432-6380
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. (No. 10GA0019/12GB0052/13GB0056/17GB0034/18GB0034)
Download PDF EA2017-110 SIP2017-119 SP2017-93

Conference Information
Committee SIP EA SP MI  
Conference Date 2018-03-19 - 2018-03-20 
Place (in Japanese) (See Japanese page) 
Place (in English)  
Topics (in Japanese) (See Japanese page) 
Topics (in English) Speech, Engineering/Electro Acoustics, Signal Processing, and Related Topics [SIP, EA, SP]/ Medical Image Engineering, Analysis, Recognition, etc. [MI] 
Paper Information
Registration To SP 
Conference Code 2018-03-SIP-EA-SP-MI 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Speaker verification based on non-linear bandwidth extension considering aliasing artifacts for super-wideband applications 
Sub Title (in English)
Keyword(1) non-linear artificial bandwidth extension  
Keyword(2) aliasing artifacts  
Keyword(3) speaker verification  
Keyword(4) PESQ  
Keyword(5) RMS-LSD  
1st Author's Name Haruna Miyamoto  
1st Author's Affiliation Tokyo Metropolitan University (Tokyo Metropolitan Univ.)
2nd Author's Name Sayaka Shiota  
2nd Author's Affiliation Tokyo Metropolitan University (Tokyo Metropolitan Univ.)
3rd Author's Name Hitoshi Kiya  
3rd Author's Affiliation Tokyo Metropolitan University (Tokyo Metropolitan Univ.)
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Date Time 2018-03-19 13:00:00 
Presentation Time 90 
Registration for SP 
Paper # IEICE-EA2017-110,IEICE-SIP2017-119,IEICE-SP2017-93 
Volume (vol) IEICE-117 
Number (no) no.515(EA), no.516(SIP), no.517(SP) 
Page pp.51-55 
#Pages IEICE-5 
Date of Issue IEICE-EA-2018-03-12,IEICE-SIP-2018-03-12,IEICE-SP-2018-03-12 

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