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Paper Abstract and Keywords
Presentation 2026-03-03 09:30
[Poster Presentation] Validation of the Effectiveness of Tight Windows for STFT Phase Retrieval
Atsuhiko Oshida, Keito Takahashi, Daichi Kitahara (Keio Univ.) EA2025-109 SIP2025-129 SP2025-62
Abstract (in Japanese) (See Japanese page) 
(in English) Phase retrieval is a technique for reconstructing phase information from the amplitude of the Fourier coefficients. In recent years, phase retrieval in the short-time Fourier transform (STFT) domain has gained attention due to applications such as X-ray ptychographic and acoustic signal processing. In this study, we compare the performance of one-dimensional STFT phase retrieval algorithms by focusing on a special class of windows, called tight windows. Extensive numerical experiments show that tight windows can averagely improve the estimation accuracy from noisy observations compared to non-tight windows.
Keyword (in Japanese) (See Japanese page) 
(in English) Short-Time Fourier Transform (STFT) / Phase Retrieval / Canonical Tight Window / Nonconvex Optimization / / / /  
Reference Info. IEICE Tech. Rep., vol. 125, no. 370, SIP2025-129, pp. 218-223, March 2026.
Paper # SIP2025-129 
Date of Issue 2026-02-23 (EA, SIP, SP) 
ISSN 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)
Download PDF EA2025-109 SIP2025-129 SP2025-62

Conference Information
Committee SP EA SIP IPSJ-SLP  
Conference Date 2026-03-02 - 2026-03-04 
Place (in Japanese) (See Japanese page) 
Place (in English)  
Topics (in Japanese) (See Japanese page) 
Topics (in English)  
Paper Information
Registration To SIP 
Conference Code 2026-03-SP-EA-SIP-SLP 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Validation of the Effectiveness of Tight Windows for STFT Phase Retrieval 
Sub Title (in English)  
Keyword(1) Short-Time Fourier Transform (STFT)  
Keyword(2) Phase Retrieval  
Keyword(3) Canonical Tight Window  
Keyword(4) Nonconvex Optimization  
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1st Author's Name Atsuhiko Oshida  
1st Author's Affiliation Keio University (Keio Univ.)
2nd Author's Name Keito Takahashi  
2nd Author's Affiliation Keio University (Keio Univ.)
3rd Author's Name Daichi Kitahara  
3rd Author's Affiliation Keio University (Keio Univ.)
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Speaker Author-1 
Date Time 2026-03-03 09:30:00 
Presentation Time 80 minutes 
Registration for SIP 
Paper # EA2025-109, SIP2025-129, SP2025-62 
Volume (vol) vol.125 
Number (no) no.369(EA), no.370(SIP), no.371(SP) 
Page pp.218-223 
#Pages 6 
Date of Issue 2026-02-23 (EA, SIP, SP) 

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