| Presentation | 2008-12-04 Application of active control system : Active control of directional characteristics of sound field Akihiro KAKIUCHI, Akira OMOTO, |
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| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | Active control of sound has been widely examined to date. In most applications, the sound pressure or acoustical potential energy, are chosen as subject to reduce. In this report the specific acoustic impedance is adopted for the control quantity. We try to generate additional active absorption and the changes in the standing wave direction by controlling the impedance. The examples of the expected applications are the active sound field equalizer or the new method for absorption coefficient measurement with small sized enclosures. Formulation in frequency and time domain are introduced. Results of the numerical simulations indicated the effectiveness of the proposed method. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | active noise control / acoustic impedance control / filtered-x LMS algorithm / active control of directional characteristics |
| Paper # | EA2008-107 |
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| Conference Information | |
| Committee | EA |
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| Conference Date | 2008/11/27(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
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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) | Application of active control system : Active control of directional characteristics of sound field |
| Sub Title (in English) | |
| Keyword(1) | active noise control |
| Keyword(2) | acoustic impedance control |
| Keyword(3) | filtered-x LMS algorithm |
| Keyword(4) | active control of directional characteristics |
| 1st Author's Name | Akihiro KAKIUCHI |
| 1st Author's Affiliation | Graduate School of Design, Kyushu University() |
| 2nd Author's Name | Akira OMOTO |
| 2nd Author's Affiliation | Faculty of Design, Kyushu University |
| Date | 2008-12-04 |
| Paper # | EA2008-107 |
| Volume (vol) | vol.108 |
| Number (no) | 333 |
| Page | pp.pp.- |
| #Pages | 6 |
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