Presentation | 2007/1/18 Reduction of acoustic oscillation by means of an inverting comb filter pair implemented on FPGA Ichiyoh MAEHARA, Shigefumi ISOBE, Kaoru ASHIHARA, Shogo KIRYU, |
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Abstract(in Japanese) | (See Japanese page) |
Abstract(in English) | Recently, in order to reduce acoustic oscillation in hearing aids and loudspeakers, an inverting comb filter pair had been proposed. This method can be implemented in small electronic equipment like hearing aids. The simulation had shown the effect of reduction of acoustic oscillation. However, influences such as nonlinearity were not considered in this simulation. In this study, an inverting comb filter pair was implemented on an FPGA. The reduction of acoustic oscillation was measured in an anechoic room with that hardware. As a result, the howling margin was 3 dB. |
Keyword(in Japanese) | (See Japanese page) |
Keyword(in English) | acoustic oscillation / comb filter / FIR filter / hearing aid / FPGA |
Paper # | TL2006-50,SP2006-138,WIT2006-82 |
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Committee | WIT |
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Conference Date | 2007/1/18(1days) |
Place (in Japanese) | (See Japanese page) |
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Topics (in Japanese) | (See Japanese page) |
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Paper Information | |
Registration To | Well-being Information Technology(WIT) |
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Language | JPN |
Title (in Japanese) | (See Japanese page) |
Sub Title (in Japanese) | (See Japanese page) |
Title (in English) | Reduction of acoustic oscillation by means of an inverting comb filter pair implemented on FPGA |
Sub Title (in English) | |
Keyword(1) | acoustic oscillation |
Keyword(2) | comb filter |
Keyword(3) | FIR filter |
Keyword(4) | hearing aid |
Keyword(5) | FPGA |
1st Author's Name | Ichiyoh MAEHARA |
1st Author's Affiliation | Musashi Institute of Technology() |
2nd Author's Name | Shigefumi ISOBE |
2nd Author's Affiliation | Musashi Institute of Technology |
3rd Author's Name | Kaoru ASHIHARA |
3rd Author's Affiliation | National Institute of Advanced Industrial Science and Technology |
4th Author's Name | Shogo KIRYU |
4th Author's Affiliation | Musashi Institute of Technology |
Date | 2007/1/18 |
Paper # | TL2006-50,SP2006-138,WIT2006-82 |
Volume (vol) | vol.106 |
Number (no) | 489 |
Page | pp.pp.- |
#Pages | 6 |
Date of Issue |