| Presentation | 2013-12-13 Multiple sound spots generation by spatial filtering in wavenumber domain using a linear loudspeaker array Takuma OKAMOTO, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | Novel signal processing is proposed for generating acoustically bright and dark zones at arbitrary horizontal positions using a linear loudspeaker array. Most conventional methods are based on the numerical calculation of the inverse of the spatial correlation matrix between control points and the positions of the loudspeakers. However, such methods are quite unstable because the acoustic inverse problem is very ill-conditioned. On the other hand, in the proposed method, spatial filters in the wavenumber domain are analytically derived by introducing the spectral division method and modeling sound pressures at the control line as a rectangular window corresponding to bright and dark zones. Computer simulation results show that the proposed method can generate acoustically bright and dark zones more accurately than the conventional acoustic energy difference maximization method. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Multizone / linear array of loudspeakers / spatial Fourier transform / spectral division method / spatial filtering |
| Paper # | EA2013-94 |
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| Conference Information | |
| Committee | EA |
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| Conference Date | 2013/12/6(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) | Multiple sound spots generation by spatial filtering in wavenumber domain using a linear loudspeaker array |
| Sub Title (in English) | |
| Keyword(1) | Multizone |
| Keyword(2) | linear array of loudspeakers |
| Keyword(3) | spatial Fourier transform |
| Keyword(4) | spectral division method |
| Keyword(5) | spatial filtering |
| 1st Author's Name | Takuma OKAMOTO |
| 1st Author's Affiliation | National Institute of Information and Communications Technology() |
| Date | 2013-12-13 |
| Paper # | EA2013-94 |
| Volume (vol) | vol.113 |
| Number (no) | 349 |
| Page | pp.pp.- |
| #Pages | 6 |
| Date of Issue | |