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Paper Abstract and Keywords
Presentation 2009-03-06 10:00
Effects from spatial cues on detectability of alarm signals in noisy environments
Naoki Kuroda, Junfeng Li (JAIST), Yukio Iwaya (Tohoku Univ.), Masashi Unoki, Masato Akagi (JAIST) SP2008-149
Abstract (in Japanese) (See Japanese page) 
(in English) It is crucial to correctly detect alarm signals in real environments. However, alarm signals are possibly masked by a variety of noises in real environments. Therefore, it is necessary to clarify perceptual characteristics of alarm signals in noisy environments. The aim of this study is to investigate how spatial cues influence the detectability of alarm signals in noisy environments. In this paper, we measured masked thresholds of alarm signals in the presence of car noise in the virtual acoustic environments regenerated by using head-related transfer functions (HRTFs), which could control spatial cues respectively. The main conclusions are: (a) when the frequency component of the alarm signal is $1.0$ kHz, the detectability of alarm signals was improved by using interaural time difference (ITD) and interaural phase difference (IPD); (b) when the frequency component of the alarm signal is $2.5$ kHz, not only ITD and IPD but also interaural level difference (ILD) play an important role of improvements in alarm signal detection when the signal is fixed in the front of listeners.
Keyword (in Japanese) (See Japanese page) 
(in English) Alarm signals / Spatial cues / Spatial release from masking (SRM) / Binaural masking level difference (BMLD) / Head-related transfer function (HRTF) / / /  
Reference Info. IEICE Tech. Rep., vol. 108, no. 465, SP2008-149, pp. 43-48, March 2009.
Paper # SP2008-149 
Date of Issue 2009-02-26 (SP) 
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 SP  
Conference Date 2009-03-05 - 2009-03-06 
Place (in Japanese) (See Japanese page) 
Place (in English) Tokyo Univ. of Technology 
Topics (in Japanese) (See Japanese page) 
Topics (in English)  
Paper Information
Registration To SP 
Conference Code 2009-03-SP 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Effects from spatial cues on detectability of alarm signals in noisy environments 
Sub Title (in English)  
Keyword(1) Alarm signals  
Keyword(2) Spatial cues  
Keyword(3) Spatial release from masking (SRM)  
Keyword(4) Binaural masking level difference (BMLD)  
Keyword(5) Head-related transfer function (HRTF)  
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1st Author's Name Naoki Kuroda  
1st Author's Affiliation School of Information Science, Japan Advanced Institute of Science and Technology (JAIST)
2nd Author's Name Junfeng Li  
2nd Author's Affiliation School of Information Science, Japan Advanced Institute of Science and Technology (JAIST)
3rd Author's Name Yukio Iwaya  
3rd Author's Affiliation Research Institute of Electorical Communication / Graduate School of Information Sciences TOHOKU UNIVERSITY (Tohoku Univ.)
4th Author's Name Masashi Unoki  
4th Author's Affiliation School of Information Science, Japan Advanced Institute of Science and Technology (JAIST)
5th Author's Name Masato Akagi  
5th Author's Affiliation School of Information Science, Japan Advanced Institute of Science and Technology (JAIST)
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Speaker Author-1 
Date Time 2009-03-06 10:00:00 
Presentation Time 30 minutes 
Registration for SP 
Paper # SP2008-149 
Volume (vol) vol.108 
Number (no) no.465 
Page pp.43-48 
#Pages 6 
Date of Issue 2009-02-26 (SP) 

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