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Paper Abstract and Keywords
Presentation 2019-01-11 09:30
Study on audio information hiding using linear-time variant IIR filter based on cochlear delay characteristics
Candy Olivia Mawalim, Masashi Unoki (JAIST) EMM2018-85
Abstract (in Japanese) (See Japanese page) 
(in English) This paper proposes a method of blind detection on audio information hiding technique based on the characteristics of the human cochlear. Cochlear delay (CD) is a good concept to produce non-blind imperceptible audio information hiding technique. However, the blind version of this technique had a problem in imperceptibility aspect due to spread of spectrum of phase shift keying (PSK). PSK caused significant changes in phase spectrum which leads to bad imperceptibility aspect. In this research, linear time variant (LTV) system was considered since it can produce smoother phase spectrum changes than linear time nvariant (LTI) system. However, detecting the instantaneous phase from the LTV CD filter is a difficult task. Chirp-z transformation (CZT) with instantaneous position in complex-plane was applied to detect the pole position of the CD filter. Results of simulations showed that the proposed method can successfully retrieve the hidden information.
Keyword (in Japanese) (See Japanese page) 
(in English) Cochlear delay / IIR filter / LTI system / LTV system / chirp z-transform / / /  
Reference Info. IEICE Tech. Rep., vol. 118, no. 382, EMM2018-85, pp. 19-24, Jan. 2019.
Paper # EMM2018-85 
Date of Issue 2019-01-03 (EMM) 
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 EMM2018-85

Conference Information
Committee EMM  
Conference Date 2019-01-10 - 2019-01-11 
Place (in Japanese) (See Japanese page) 
Place (in English) Tohoku Univ. 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Sense of Presence, Universal Media, Digital Entertainment, etc. 
Paper Information
Registration To EMM 
Conference Code 2019-01-EMM 
Language English 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Study on audio information hiding using linear-time variant IIR filter based on cochlear delay characteristics 
Sub Title (in English)  
Keyword(1) Cochlear delay  
Keyword(2) IIR filter  
Keyword(3) LTI system  
Keyword(4) LTV system  
Keyword(5) chirp z-transform  
Keyword(6)  
Keyword(7)  
Keyword(8)  
1st Author's Name Candy Olivia Mawalim  
1st Author's Affiliation Japan Advanced Institute of Science and Technology (JAIST)
2nd Author's Name Masashi Unoki  
2nd Author's Affiliation Japan Advanced Institute of Science and Technology (JAIST)
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Speaker Author-1 
Date Time 2019-01-11 09:30:00 
Presentation Time 25 minutes 
Registration for EMM 
Paper # EMM2018-85 
Volume (vol) vol.118 
Number (no) no.382 
Page pp.19-24 
#Pages 6 
Date of Issue 2019-01-03 (EMM) 

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