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Paper Abstract and Keywords
Presentation 2016-01-19 10:30
An Improvement of the Public Announcement Systems Based on Audio Data Hiding Using Complete Complementary Codes
Yuto Matsunaga, Kan Kamada, Tetsuya Kojima (NIT, Tokyo College) EMM2015-71
Abstract (in Japanese) (See Japanese page) 
(in English) A disaster prevention broadcasting system based on audio data hiding using complete complementary codes has been proposed. This system can be extended to a generic public audio announcement system such as business districts or shopping malls with data hiding technique. However, it has been pointed out that it is quite difficult for the system to extract the embedded information bits exactly in realistic situations. One of the reason of this problem is a kind of multipath effects in indoor scenario. In this study, it is a primal objective to avoid the multipath effect during the transmission through the communication channel from a loud speaker to the receiver microphone. In the present study, we consider embedding the information bits in high frequency regions of the cover audio signals, applying CDMA system using complete complementary codes to avoid the multipath effects, and shortening the sequence length of the embedded signals. As a result, it has been confirmed that we had better to embed the information bits into the real part of the frequency factors of the cover signals into the high frequency regions by employing the complete complementary codes with shorter length through computer simulations and experiments using a loud speaker and a microphone under the indoor scenario.
Keyword (in Japanese) (See Japanese page) 
(in English) audio data hiding / complete complementary code / public announcement system / / / / /  
Reference Info. IEICE Tech. Rep., vol. 115, no. 397, EMM2015-71, pp. 61-66, Jan. 2016.
Paper # EMM2015-71 
Date of Issue 2016-01-11 (EMM) 
ISSN Print edition: ISSN 0913-5685    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)
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Conference Information
Committee EMM  
Conference Date 2016-01-18 - 2016-01-19 
Place (in Japanese) (See Japanese page) 
Place (in English) Katahira Campus, Tohoku University 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Sense of Presence, Universal Media, Digital Entertainment, etc. 
Paper Information
Registration To EMM 
Conference Code 2016-01-EMM 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) An Improvement of the Public Announcement Systems Based on Audio Data Hiding Using Complete Complementary Codes 
Sub Title (in English)  
Keyword(1) audio data hiding  
Keyword(2) complete complementary code  
Keyword(3) public announcement system  
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1st Author's Name Yuto Matsunaga  
1st Author's Affiliation National Institute of Technology, Tokyo College (NIT, Tokyo College)
2nd Author's Name Kan Kamada  
2nd Author's Affiliation National Institute of Technology, Tokyo College (NIT, Tokyo College)
3rd Author's Name Tetsuya Kojima  
3rd Author's Affiliation National Institute of Technology, Tokyo College (NIT, Tokyo College)
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Speaker Author-1 
Date Time 2016-01-19 10:30:00 
Presentation Time 30 minutes 
Registration for EMM 
Paper # EMM2015-71 
Volume (vol) vol.115 
Number (no) no.397 
Page pp.61-66 
#Pages 6 
Date of Issue 2016-01-11 (EMM) 

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