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| Presentation | 2007-09-27 13:30 A howling suppressor using distance measurement Arata Kawamura, Akira Sogami, Youji Iiguni (Osaka Univ.)  SIP2007-88 SIS2007-24 SP2007-50 |
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| Abstract | (in Japanese) | (See Japanese page) |
| (in English) | In this paper, we propose a howling canceller that uses a distance measure between the loudspeaker and the microphone, by noticing that the howling frequency depends on the distance. Unlike conventional howling cancellers that estimate the transfer function of the feedback path from the loudspeaker to the microphone, the proposed method needs to estimate only the distance of the two devices. The distance is easily measured by the time difference between the pilot signal transmitted from the loudspeaker and the received signal at the microphone. Multiple candidates of the howling frequency are computed from the distance measure and the howling is eliminated by the cascaded notch filters that have nulls at the howling frequencies. We implement the proposed howling canceller on a DSP and evaluate its capability of howling cancellation in a practical environment. | |
| Keyword | (in Japanese) | (See Japanese page) |
| (in English) | howling / howling canceller / distance measurement / notch filter / / / / | |
| Reference Info. | IEICE Tech. Rep., vol. 107, no. 234, SIP2007-88, pp. 31-36, Sept. 2007. | |
| Paper # | SIP2007-88 | |
| Date of Issue | 2007-09-20 (SIP, SIS, 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) | |
| Download PDF | SIP2007-88 SIS2007-24 SP2007-50 |
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| Conference Information | |
| Committee | SIP SIS SP |
| Conference Date | 2007-09-27 - 2007-09-28 |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Nagoya Inst. of Tech. |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | Signal Processing, Intelligent Multimedia Systems, etc. |
| Paper Information | |
| Registration To | SIP |
| Conference Code | 2007-09-SIP-SIS-SP |
| Language | Japanese |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | A howling suppressor using distance measurement |
| Sub Title (in English) | |
| Keyword(1) | howling |
| Keyword(2) | howling canceller |
| Keyword(3) | distance measurement |
| Keyword(4) | notch filter |
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| Keyword(8) | |
| 1st Author's Name | Arata Kawamura |
| 1st Author's Affiliation | Osaka University (Osaka Univ.) |
| 2nd Author's Name | Akira Sogami |
| 2nd Author's Affiliation | Osaka University (Osaka Univ.) |
| 3rd Author's Name | Youji Iiguni |
| 3rd Author's Affiliation | Osaka University (Osaka Univ.) |
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| Speaker | Author-1 |
| Date Time | 2007-09-27 13:30:00 |
| Presentation Time | 25 minutes |
| Registration for | SIP |
| Paper # | SIP2007-88, SIS2007-24, SP2007-50 |
| Volume (vol) | vol.107 |
| Number (no) | no.234(SIP), no.236(SIS), no.238(SP) |
| Page | pp.31-36 |
| #Pages | 6 |
| Date of Issue | 2007-09-20 (SIP, SIS, SP) |
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