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Paper Abstract and Keywords
Presentation 2014-07-10 09:30
Temporally static representation of group delay for periodic signals
Hideki Kawahara (Wakayama Univ.) CAS2014-21 VLD2014-30 SIP2014-42 MSS2014-21 SIS2014-21
Abstract (in Japanese) (See Japanese page) 
(in English) Short term Fourier transform of periodic signals introduce periodic temporal variations in their Frequency domain representations such as power spectrum, instantaneous frequency, and group delay, depending on relative phasic relation between the windowing function and the signal under study. Static representations of power spectrum and instantaneous frequency were already introduced by ours in search of temporally static representations. In this report, a new group delay representation which effectively eliminates temporal variations caused by signal periodicity is introduced with derivations. Test signals and actual speech signal examples are analyzed to illustrate behavior of the proposed representation. While this static representation is designed for speech analysis, modification and synthesis systems, it is also applicable to visual images with periodic structures.
Keyword (in Japanese) (See Japanese page) 
(in English) group delay / periodic signals / instantaneous frequency / power spectrum / speech analysis and synthesis / / /  
Reference Info. IEICE Tech. Rep., vol. 114, no. 124, SIP2014-42, pp. 105-110, July 2014.
Paper # SIP2014-42 
Date of Issue 2014-07-02 (CAS, VLD, SIP, MSS, SIS) 
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 CAS2014-21 VLD2014-30 SIP2014-42 MSS2014-21 SIS2014-21

Conference Information
Conference Date 2014-07-09 - 2014-07-11 
Place (in Japanese) (See Japanese page) 
Place (in English) Hokkaido University 
Topics (in Japanese) (See Japanese page) 
Topics (in English) System, signal processing and related topics 
Paper Information
Registration To SIP 
Conference Code 2014-07-CAS-SIP-MSS-VLD-SIS 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Temporally static representation of group delay for periodic signals 
Sub Title (in English)  
Keyword(1) group delay  
Keyword(2) periodic signals  
Keyword(3) instantaneous frequency  
Keyword(4) power spectrum  
Keyword(5) speech analysis and synthesis  
1st Author's Name Hideki Kawahara  
1st Author's Affiliation Wakayama University (Wakayama Univ.)
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Date Time 2014-07-10 09:30:00 
Presentation Time 20 
Registration for SIP 
Paper # IEICE-CAS2014-21,IEICE-VLD2014-30,IEICE-SIP2014-42,IEICE-MSS2014-21,IEICE-SIS2014-21 
Volume (vol) IEICE-114 
Number (no) no.122(CAS), no.123(VLD), no.124(SIP), no.125(MSS), no.126(SIS) 
Page pp.105-110 
#Pages IEICE-6 
Date of Issue IEICE-CAS-2014-07-02,IEICE-VLD-2014-07-02,IEICE-SIP-2014-07-02,IEICE-MSS-2014-07-02,IEICE-SIS-2014-07-02 

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