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Paper Abstract and Keywords
Presentation 2019-10-29 13:25
Influence of Snow on Speech Intelligibility and its Compensation Filter
Shuto Shibata, Kazuhiro Kondo (Yamagata Univ.) EA2019-48
Abstract (in Japanese) (See Japanese page) 
(in English) When it snows, it often sounds quiet outdoors. This is because snow inhibits sound transmission. Snowfall is known to make it difficult to hear the sound, especially mid-low tones. The above phenomenon is considered to have a great influence on the warning message of the disaster prevention radio broadcasting system. In the event of a disaster, the information from the warning system may cause a serious situation when it is disturbed by the effects of snow.
Accordingly, In this study, we clarified how much the amount of snow accumulation, the amount of snowfall and the density, the major factors of snow, contribute to speech intelligibility and its compensation method was examined. In order to measure the transfer characteristics of the snow, an impulse response measurement experiment was performed 13 times under different conditions outdoors in the snow. The measured transfer characteristics were convoluted with the test speech, and the Japanese intelligibility test was performed using these samples. Multiple regression analysis was performed using speech intelligibility as the objective variable and snow factor as explanatory variables, and the contribution rate to intelligibility was analyzed. As a result, it was found that although there is some influence on the amount of snowfall and density, the influence of the amount of snowfall becomes dominant as the distance between the loudspeaker and the listener (microphone) becomes large. Furthermore, using the acquired transfer characteristics, we examined the compensation filter for snow attenuation.
Keyword (in Japanese) (See Japanese page) 
(in English) Speech Intelligibility / Impulse Response / Snow / Compensation Filter / / / /  
Reference Info. IEICE Tech. Rep., vol. 119, no. 253, EA2019-48, pp. 77-82, Oct. 2019.
Paper # EA2019-48 
Date of Issue 2019-10-21 (EA) 
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. (No. 10GA0019/12GB0052/13GB0056/17GB0034/18GB0034)
Download PDF EA2019-48

Conference Information
Committee EA ASJ-H  
Conference Date 2019-10-28 - 2019-10-29 
Place (in Japanese) (See Japanese page) 
Place (in English) NHK Science&Technology Research Lab. 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Engineering/Electro Acoustics, Psychological and Physiological Acoustics, High-Reality Audio, Spatial Audio, and Related Topics 
Paper Information
Registration To EA 
Conference Code 2019-10-EA-H 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Influence of Snow on Speech Intelligibility and its Compensation Filter 
Sub Title (in English)  
Keyword(1) Speech Intelligibility  
Keyword(2) Impulse Response  
Keyword(3) Snow  
Keyword(4) Compensation Filter  
1st Author's Name Shuto Shibata  
1st Author's Affiliation Yamagata University (Yamagata Univ.)
2nd Author's Name Kazuhiro Kondo  
2nd Author's Affiliation Yamagata University (Yamagata Univ.)
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Date Time 2019-10-29 13:25:00 
Presentation Time 25 
Registration for EA 
Paper # IEICE-EA2019-48 
Volume (vol) IEICE-119 
Number (no) no.253 
Page pp.77-82 
#Pages IEICE-6 
Date of Issue IEICE-EA-2019-10-21 

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