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Paper Abstract and Keywords
Presentation 2020-03-06 12:10
The Variation of Fractal Dimension in Environmental Sound Wave during Medium to Long Term
Yoshiaki Makabe (Kanagawa Institute of Technology), Kenji Muto (Shibaura Institute of Technology), Tomoaki Kimura (Kanagawa Institute of Technology) SIS2019-55
Abstract (in Japanese) (See Japanese page) 
(in English) Our study is developing new method to evaluate the self-similarity waveform using the Fractal dimensions.
From the study conducted so far, we show that the self similarity waveform can be identified by our sense of hearing and it is affected by regionality of sound environment such as around the airport or beautiful nature.
Also, it is important for our comfortable life to protect the sound environment.
The relationship between good environmental sound and Fractal dimensions have not become clear.
In the latest study, we find that the sound generated by propulsion system of Shinkansen railcar or aircraft has strong self similarity and causes decline in Fractal dimension when these sounds comes close to ourselves.
We find that by analyzing the environmental sound in short period of 5 [s] and we believe that we need to consider a case with longer time.
In this thesis paper, we report the result of continuously measuring the change of Fractal dimension using the environmental sound of Shinkansen railroad and airport of which both have 600 [s] period.
Keyword (in Japanese) (See Japanese page) 
(in English) Environmental Sound / Fractal Dimension / Railroad / Shinkansen / Airport / Aircraft / /  
Reference Info. IEICE Tech. Rep., vol. 119, no. 458, SIS2019-55, pp. 101-106, March 2020.
Paper # SIS2019-55 
Date of Issue 2020-02-27 (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)
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Conference Information
Committee SIS  
Conference Date 2020-03-05 - 2020-03-06 
Place (in Japanese) (See Japanese page) 
Place (in English) Saitama Hall 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Soft Computing, etc. 
Paper Information
Registration To SIS 
Conference Code 2020-03-SIS 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) The Variation of Fractal Dimension in Environmental Sound Wave during Medium to Long Term 
Sub Title (in English)  
Keyword(1) Environmental Sound  
Keyword(2) Fractal Dimension  
Keyword(3) Railroad  
Keyword(4) Shinkansen  
Keyword(5) Airport  
Keyword(6) Aircraft  
1st Author's Name Yoshiaki Makabe  
1st Author's Affiliation Kanagawa Institute of Technology (Kanagawa Institute of Technology)
2nd Author's Name Kenji Muto  
2nd Author's Affiliation Shibaura Institute of Technology (Shibaura Institute of Technology)
3rd Author's Name Tomoaki Kimura  
3rd Author's Affiliation Kanagawa Institute of Technology (Kanagawa Institute of Technology)
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Speaker Author-1 
Date Time 2020-03-06 12:10:00 
Presentation Time 20 minutes 
Registration for SIS 
Paper # SIS2019-55 
Volume (vol) vol.119 
Number (no) no.458 
Page pp.101-106 
Date of Issue 2020-02-27 (SIS) 

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