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Paper Abstract and Keywords
Presentation 2016-03-29 09:00
[Poster Presentation] Amplitude limiters based on phase optimization
Akira Kakitani, Daisuke Saito, Yasuhiro Kosugi, Nobuaki Minematsu (UTokyo) EA2015-111 SIP2015-160 SP2015-139
Abstract (in Japanese) (See Japanese page) 
(in English) In order to reduce the peak value of source waveforms without quality degradation, a novel method is proposed. In this method, by exploiting the characteristics of human auditory system, which is often said to be insensitive to phase changes, peak value reduction is made possible. The proposed method is an improved version of our previous study, which manipulated the waveforms mainly based on phase control. In the conventional algorithm, however, amplitude characteristics have to be altered to some degree. The proposed method attempts to minimize the change of amplitude characteristics. Evaluation experiments show that the proposed method outperforms the conventional one in a PEAQ test but the superiority is not found in a MUSHRA test.
Keyword (in Japanese) (See Japanese page) 
(in English) amplitude limiters / short-time Fourier transform / auxiliary function technique / iterative STFT algorithm / convex quadratic programming / / /  
Reference Info. IEICE Tech. Rep., vol. 115, no. 523, SP2015-139, pp. 249-254, March 2016.
Paper # SP2015-139 
Date of Issue 2016-03-21 (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. (License No.: 10GA0019/12GB0052/13GB0056/17GB0034/18GB0034)
Download PDF EA2015-111 SIP2015-160 SP2015-139

Conference Information
Committee EA SP SIP  
Conference Date 2016-03-28 - 2016-03-29 
Place (in Japanese) (See Japanese page) 
Place (in English) Beppu International Convention Center B-ConPlaza 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Engineering/Electro Acoustics, Speech, Signal Processing, and Related Topics 
Paper Information
Registration To SP 
Conference Code 2016-03-EA-SP-SIP 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Amplitude limiters based on phase optimization 
Sub Title (in English)  
Keyword(1) amplitude limiters  
Keyword(2) short-time Fourier transform  
Keyword(3) auxiliary function technique  
Keyword(4) iterative STFT algorithm  
Keyword(5) convex quadratic programming  
1st Author's Name Akira Kakitani  
1st Author's Affiliation The University of Tokyo (UTokyo)
2nd Author's Name Daisuke Saito  
2nd Author's Affiliation The University of Tokyo (UTokyo)
3rd Author's Name Yasuhiro Kosugi  
3rd Author's Affiliation The University of Tokyo (UTokyo)
4th Author's Name Nobuaki Minematsu  
4th Author's Affiliation The University of Tokyo (UTokyo)
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Speaker Author-1 
Date Time 2016-03-29 09:00:00 
Presentation Time 90 minutes 
Registration for SP 
Paper # EA2015-111, SIP2015-160, SP2015-139 
Volume (vol) vol.115 
Number (no) no.521(EA), no.522(SIP), no.523(SP) 
Page pp.249-254 
Date of Issue 2016-03-21 (EA, SIP, SP) 

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