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| Presentation | 2011-01-21 10:15 Characteristics of ultrasonic echolocation pulse of FM bats (Pipistrellus abramus) in a cluttered environment Toshiya Takenaga, Yukako Kagami, Emyo Fujioka, Shizuko Hiryu, Hiroshi Riquimaroux, Yoshiaki Watanabe (Doshisha Univ.)  US2010-104 EA2010-117 |
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| Abstract | (in Japanese) | (See Japanese page) |
| (in English) | Changes in the terminal frequency (TF; the end frequency of downward FM sweep) of echolocation pulses were investigated by using Telemike for two FM bat species (Pipistrellus abramus and Miniopterus fuliginosus) in a cluttered environment. P. abramus emitted pulses in pairs (strobe group) with 20-40 ms interpulse intervals (IPIs), which occasionally created pulse-echo ambiguity. When overlap occurred, variation of the $ \delta $F was significantly increased to 5-6 kHz (F-test, P < 0.001). On the other hand, M. fuliginosus never emitted pulses in a strobe group. Since IPIs were always adjusted to be longer than ESD, echo streams were not overlapped. These comparative results indicate that by shifting TF within successive pulses, P. abramus separate between their own echo streams to avoid pulse-echo ambiguity. Our findings also suggest that echolocation strategy in the cluttered environment may be different between bat species. | |
| Keyword | (in Japanese) | (See Japanese page) |
| (in English) | Miniopterus fuliginosus / Cluttered echo / Terminal frequency / Telemike / / / / | |
| Reference Info. | IEICE Tech. Rep., vol. 110, no. 366, US2010-104, pp. 71-76, Jan. 2011. | |
| Paper # | US2010-104 | |
| Date of Issue | 2011-01-13 (US, EA) | |
| 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) | |
| Download PDF | US2010-104 EA2010-117 |
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| Conference Information | |
| Committee | EA US |
| Conference Date | 2011-01-20 - 2011-01-21 |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Doshisha Univ. |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | [Joint Meeting on Acoustics and Ultrasonics Subsociety] Engineering/Electro Acoustics, Ultrasonic and Underwater Acoustics，and Related Topics |
| Paper Information | |
| Registration To | US |
| Conference Code | 2011-01-EA-US |
| Language | Japanese |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Characteristics of ultrasonic echolocation pulse of FM bats (Pipistrellus abramus) in a cluttered environment |
| Sub Title (in English) | |
| Keyword(1) | Miniopterus fuliginosus |
| Keyword(2) | Cluttered echo |
| Keyword(3) | Terminal frequency |
| Keyword(4) | Telemike |
| Keyword(5) | |
| Keyword(6) | |
| Keyword(7) | |
| Keyword(8) | |
| 1st Author's Name | Toshiya Takenaga |
| 1st Author's Affiliation | Doshisha University (Doshisha Univ.) |
| 2nd Author's Name | Yukako Kagami |
| 2nd Author's Affiliation | Doshisha University (Doshisha Univ.) |
| 3rd Author's Name | Emyo Fujioka |
| 3rd Author's Affiliation | Doshisha University (Doshisha Univ.) |
| 4th Author's Name | Shizuko Hiryu |
| 4th Author's Affiliation | Doshisha University (Doshisha Univ.) |
| 5th Author's Name | Hiroshi Riquimaroux |
| 5th Author's Affiliation | Doshisha University (Doshisha Univ.) |
| 6th Author's Name | Yoshiaki Watanabe |
| 6th Author's Affiliation | Doshisha University (Doshisha Univ.) |
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| Speaker | Author-1 |
| Date Time | 2011-01-21 10:15:00 |
| Presentation Time | 30 minutes |
| Registration for | US |
| Paper # | US2010-104, EA2010-117 |
| Volume (vol) | vol.110 |
| Number (no) | no.366(US), no.367(EA) |
| Page | pp.71-76 |
| #Pages | 6 |
| Date of Issue | 2011-01-13 (US, EA) |
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