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Paper Abstract and Keywords
Presentation 2025-11-11 14:35
Nonlinear signal amplification using Hopf oscillators
Koya Yakushi, Tomoaki Niiyama, Satoshi Sunada (Kanazawa Univ.) CCS2025-52
Abstract (in Japanese) (See Japanese page) 
(in English) The human auditory system can perceive a wide range of sound intensities, a function achieved by outer hair cells that selectively amplify small vibrations. By mimicking this nonlinear amplification characteristic, it is expected that sensors capable of handling a broad range of signal intensities can be realized. In this study, using a mathematical model representing the function of outer hair cells as a Hopf oscillator receiving external input, we analyzed its responses under various conditions numerically. The results revealed that when the input is amplitude-modulated at the oscillator’s natural frequency, the amplification characteristics emerge. Furthermore, we show that coupling multiple Hopf oscillators generates diverse responses that cannot be obtained from a single oscillator.
Keyword (in Japanese) (See Japanese page) 
(in English) Hopf bifurcation / Outer Hair cell / High-dynamic range sensor / Optical amplifier / / / /  
Reference Info. IEICE Tech. Rep., vol. 125, no. 235, CCS2025-52, pp. 100-101, Nov. 2025.
Paper # CCS2025-52 
Date of Issue 2025-11-03 (CCS) 
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 CCS2025-52

Conference Information
Committee CCS  
Conference Date 2025-11-10 - 2025-11-11 
Place (in Japanese) (See Japanese page) 
Place (in English) The Kanazawa Theater 
Topics (in Japanese) (See Japanese page) 
Topics (in English) CCS, etc. 
Paper Information
Registration To CCS 
Conference Code 2025-11-CCS 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Nonlinear signal amplification using Hopf oscillators 
Sub Title (in English)  
Keyword(1) Hopf bifurcation  
Keyword(2) Outer Hair cell  
Keyword(3) High-dynamic range sensor  
Keyword(4) Optical amplifier  
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1st Author's Name Koya Yakushi  
1st Author's Affiliation Kanazawa University (Kanazawa Univ.)
2nd Author's Name Tomoaki Niiyama  
2nd Author's Affiliation Kanazawa University (Kanazawa Univ.)
3rd Author's Name Satoshi Sunada  
3rd Author's Affiliation Kanazawa University (Kanazawa Univ.)
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Speaker Author-1 
Date Time 2025-11-11 14:35:00 
Presentation Time 25 minutes 
Registration for CCS 
Paper # CCS2025-52 
Volume (vol) vol.125 
Number (no) no.235 
Page pp.100-101 
#Pages 2 
Date of Issue 2025-11-03 (CCS) 

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