| Presentation | 2007-08-09 Elimination of acoustic oscillation by a comb filter and frequency shifting Kaoru ASHIHARA, Kenji ITAGAKI, Shogo KIRYU, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | A technique to reduce acoustic oscillation is proposed. It contains a comb filter and a frequency shifter. The comb filter has a number of elimination bands. The frequencies of signals are shifted by several % by the frequency shifter. Each time the signals return to the input, their frequency is shifted and they will enter the elimination bands. By using this method, acoustic feedbacks can be reduced without knowing the exact frequency of oscillation. The oscillation margin of 6 dB was obtained in software simulation. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | acoustic feedback / frequency shifter / comb filter / Hilbert transform / hearing aid |
| Paper # | EA2007-45 |
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| Conference Information | |
| Committee | EA |
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| Conference Date | 2007/8/2(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | |
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| Paper Information | |
| Registration To | Engineering Acoustics (EA) |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Elimination of acoustic oscillation by a comb filter and frequency shifting |
| Sub Title (in English) | |
| Keyword(1) | acoustic feedback |
| Keyword(2) | frequency shifter |
| Keyword(3) | comb filter |
| Keyword(4) | Hilbert transform |
| Keyword(5) | hearing aid |
| 1st Author's Name | Kaoru ASHIHARA |
| 1st Author's Affiliation | National Institute of Advanced Industrial Science and Technology() |
| 2nd Author's Name | Kenji ITAGAKI |
| 2nd Author's Affiliation | Musashi Institute of Technology |
| 3rd Author's Name | Shogo KIRYU |
| 3rd Author's Affiliation | Musashi Institute of Technology |
| Date | 2007-08-09 |
| Paper # | EA2007-45 |
| Volume (vol) | vol.107 |
| Number (no) | 186 |
| Page | pp.pp.- |
| #Pages | 6 |
| Date of Issue | |