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Paper Abstract and Keywords
Presentation 2012-11-16 14:45
A study on optimum sound level of broadcasting in a noisy train
Takumi Majima, Aya Shoji, Yutaka Kaneda (Tokyo Denki Univ.), Satoshi Yamamoto, Hayato Imamura (Yawata Electric Industry) EA2012-91 EMM2012-73
Abstract (in Japanese) (See Japanese page) 
(in English) Broadcasting in a noisy train has two problems. When the broadcasting sound level is too low, the broadcast is inaudible. On the other hand, when the sound level is too high, it is noisy. We thus have to adjust the broadcast to the optimum sound level. Here, we study the optimum sound level of broadcasting. Subjective experiments to evaluate the intelligibility and annoyance of broadcasts (female voice, four words) were conducted under several conditions with three types of recorded noise. We found that 1) increasing the broadcasting sound level increases intelligibility, and further increasing it increases annoyance; the optimum sound level is located between levels corresponding to full intelligibility and some annoyance, 2) when the noise level becomes 10 dB higher, the optimum sound level becomes 4 dB higher, and this relationship is dominated by intelligibility score, 3) Intelligibility has a greater effect on the optimum sound level than annoyance.
Keyword (in Japanese) (See Japanese page) 
(in English) Broadcasting / Optimum sound level / Train / Intelligibility / Annoyance / / /  
Reference Info. IEICE Tech. Rep., vol. 112, no. 292, EA2012-91, pp. 57-62, Nov. 2012.
Paper # EA2012-91 
Date of Issue 2012-11-09 (EA, 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 EA EMM  
Conference Date 2012-11-16 - 2012-11-17 
Place (in Japanese) (See Japanese page) 
Place (in English) OITA Univ. 
Topics (in Japanese) (See Japanese page) 
Topics (in English)  
Paper Information
Registration To EA 
Conference Code 2012-11-EA-EMM 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) A study on optimum sound level of broadcasting in a noisy train 
Sub Title (in English)  
Keyword(1) Broadcasting  
Keyword(2) Optimum sound level  
Keyword(3) Train  
Keyword(4) Intelligibility  
Keyword(5) Annoyance  
Keyword(6)  
Keyword(7)  
Keyword(8)  
1st Author's Name Takumi Majima  
1st Author's Affiliation Tokyo Denki University (Tokyo Denki Univ.)
2nd Author's Name Aya Shoji  
2nd Author's Affiliation Tokyo Denki University (Tokyo Denki Univ.)
3rd Author's Name Yutaka Kaneda  
3rd Author's Affiliation Tokyo Denki University (Tokyo Denki Univ.)
4th Author's Name Satoshi Yamamoto  
4th Author's Affiliation Yawata Electric Industrial Co., Ltd. (Yawata Electric Industry)
5th Author's Name Hayato Imamura  
5th Author's Affiliation Yawata Electric Industrial Co., Ltd. (Yawata Electric Industry)
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Speaker Author-1 
Date Time 2012-11-16 14:45:00 
Presentation Time 25 minutes 
Registration for EA 
Paper # EA2012-91, EMM2012-73 
Volume (vol) vol.112 
Number (no) no.292(EA), no.293(EMM) 
Page pp.57-62 
#Pages 6 
Date of Issue 2012-11-09 (EA, EMM) 

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