| Presentation | 2007-09-27 A howling suppressor using distance measurement Arata KAWAMURA, Akira SOGAMI, Youji IIGUNI, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(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) |
| Keyword(in English) | howling / howling canceller / distance measurement / notch filter |
| Paper # | SIP2007-88,SIS2007-24,SP2007-50 |
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| Conference Information | |
| Committee | SIP |
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| Conference Date | 2007/9/20(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
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| Paper Information | |
| Registration To | Signal Processing (SIP) |
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| Language | JPN |
| 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 |
| 1st Author's Name | Arata KAWAMURA |
| 1st Author's Affiliation | Department of Systems Innovation, Graduate School of Engineering Science, Osaka University() |
| 2nd Author's Name | Akira SOGAMI |
| 2nd Author's Affiliation | Department of Systems Innovation, Graduate School of Engineering Science, Osaka University |
| 3rd Author's Name | Youji IIGUNI |
| 3rd Author's Affiliation | Department of Systems Innovation, Graduate School of Engineering Science, Osaka University |
| Date | 2007-09-27 |
| Paper # | SIP2007-88,SIS2007-24,SP2007-50 |
| Volume (vol) | vol.107 |
| Number (no) | 234 |
| Page | pp.pp.- |
| #Pages | 6 |
| Date of Issue | |