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Paper Abstract and Keywords
Presentation 2024-06-06 16:10
On Time-Position Detection of Signals under Noise by Wavelet Transform
Hideo Shibayama (Shibaura Institute of Technology), Yoshiaki Makabe (Kanagawa Institute of Technology), Kenji Muto (Shibaura Institute of Technology), Tomoaki Kimura (Kanagawa Institute of Technology) SIS2024-8
Abstract (in Japanese) (See Japanese page) 
(in English) The paper presents a study where wavelet analysis is employed to estimate the temporal location of a target test sound’s generation. For the efficacy of the estimation method, it is advantageous to utilize a non-deterministic signal, such as a pulse waveform, which exhibits significant amplitude and frequency variations within a brief timeframe. Schlegel’s green frogs demonstrate temporal fluctuations in pitch frequency, with corresponding changes in formant frequency. The frogs’ vocalizations were selected for the experiment due to their compliance with the test sound criteria. However, as these vocalizations were recorded in natural settings, they contained noise, necessitating noise reduction processing. Subsequently, non-integer Brownian motion with 1/f characteristics was superimposed on the frog’s voice to estimate the temporal location under a signal-to-noise ratio of -8.5 dB. The analysis, conducted using Haar wavelets, proved to be an effective method for detecting the temporal location of the frog’s voice, even under low signal-to-noise ratio conditions.
Keyword (in Japanese) (See Japanese page) 
(in English) Fractal Dimensional Filter / Frog Voice / Wavelet Analysis / Time Position Detection / Variogram / / /  
Reference Info. IEICE Tech. Rep., vol. 124, no. 57, SIS2024-8, pp. 39-44, June 2024.
Paper # SIS2024-8 
Date of Issue 2024-05-30 (SIS) 
ISSN Online edition: ISSN 2432-6380
Copyright
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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 SIS2024-8

Conference Information
Committee SIS  
Conference Date 2024-06-06 - 2024-06-07 
Place (in Japanese) (See Japanese page) 
Place (in English) Hiroshima University 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Intelligent Multimedia Systems, Applied Embedded Systems, Three-Dimensional Image Technology (3DIT), etc. 
Paper Information
Registration To SIS 
Conference Code 2024-06-SIS 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) On Time-Position Detection of Signals under Noise by Wavelet Transform 
Sub Title (in English)  
Keyword(1) Fractal Dimensional Filter  
Keyword(2) Frog Voice  
Keyword(3) Wavelet Analysis  
Keyword(4) Time Position Detection  
Keyword(5) Variogram  
Keyword(6)  
Keyword(7)  
Keyword(8)  
1st Author's Name Hideo Shibayama  
1st Author's Affiliation Shibaura Institute of Technology (Shibaura Institute of Technology)
2nd Author's Name Yoshiaki Makabe  
2nd Author's Affiliation Kanagawa Institute of Technology (Kanagawa Institute of Technology)
3rd Author's Name Kenji Muto  
3rd Author's Affiliation Shibaura Institute of Technology (Shibaura Institute of Technology)
4th Author's Name Tomoaki Kimura  
4th Author's Affiliation Kanagawa Institute of Technology (Kanagawa Institute of Technology)
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Speaker Author-2 
Date Time 2024-06-06 16:10:00 
Presentation Time 20 minutes 
Registration for SIS 
Paper # SIS2024-8 
Volume (vol) vol.124 
Number (no) no.57 
Page pp.39-44 
#Pages 6 
Date of Issue 2024-05-30 (SIS) 

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