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Paper Abstract and Keywords
Presentation 2008-01-29 17:00
Measurements of pulse and echo for flying CF-FM bats by telemetry sound recording -- Characteristics of pulse-echo overlap during flight --
Yu Shiori, Tatsuro Hosokawa, Shizuko Hiryu, Hiroshi Riquimaroux, Yoshiaki Watanabe (Doshisha Univ.) US2007-108
Abstract (in Japanese) (See Japanese page) 
(in English) Onboard telemetry sound recording allowed us to examine pulse-echo interference which the horseshoe bats actually experienced during flight. In the results, the frequency of beat arising in the echolocation signal was changed according to the frequency difference between the pulse and the echo. The bats were found to adjust their pulse duration to keep the overlap duration between pulse and echo from the target wall at constant. Based on the results, comparing with the interaural time difference of the echo, the time difference between the peaks in the envelope of the beat signal at two ears was enlarged. These results suggest that the overlap signals may carry important information for echolocation.
Keyword (in Japanese) (See Japanese page) 
(in English) Beat frequency / Overlap duration / Telemike / Rhinolophus ferrumequinum nippon / / / /  
Reference Info. IEICE Tech. Rep., vol. 107, no. 468, US2007-108, pp. 65-70, Jan. 2008.
Paper # US2007-108 
Date of Issue 2008-01-22 (US) 
ISSN Print edition: ISSN 0913-5685    Online edition: ISSN 2432-6380
Copyright
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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 US  
Conference Date 2008-01-28 - 2008-01-29 
Place (in Japanese) (See Japanese page) 
Place (in English) Kansai University 
Topics (in Japanese) (See Japanese page) 
Topics (in English) General 
Paper Information
Registration To US 
Conference Code 2008-01-EA-US 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Measurements of pulse and echo for flying CF-FM bats by telemetry sound recording 
Sub Title (in English) Characteristics of pulse-echo overlap during flight 
Keyword(1) Beat frequency  
Keyword(2) Overlap duration  
Keyword(3) Telemike  
Keyword(4) Rhinolophus ferrumequinum nippon  
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1st Author's Name Yu Shiori  
1st Author's Affiliation Doshisha University (Doshisha Univ.)
2nd Author's Name Tatsuro Hosokawa  
2nd Author's Affiliation Doshisha University (Doshisha Univ.)
3rd Author's Name Shizuko Hiryu  
3rd Author's Affiliation Doshisha University (Doshisha Univ.)
4th Author's Name Hiroshi Riquimaroux  
4th Author's Affiliation Doshisha University (Doshisha Univ.)
5th Author's Name Yoshiaki Watanabe  
5th Author's Affiliation Doshisha University (Doshisha Univ.)
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Speaker Author-1 
Date Time 2008-01-29 17:00:00 
Presentation Time 30 minutes 
Registration for US 
Paper # US2007-108 
Volume (vol) vol.107 
Number (no) no.468 
Page pp.65-70 
#Pages
Date of Issue 2008-01-22 (US) 


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