| Presentation | 2015-08-03 Multiple sound spots generation by spatial filtering in wavenumber domain using a linear loudspeaker array Takuma Okamoto, Atsushi Sakaguchi, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | An analytical method for generating acoustically bright and dark zones at arbitrary horizontal positions using a linear loudspeaker array was proposed. This method is based on the spatial Fourier transform and models sound pressures at the control line as a rectangular window corresponding to bright and dark zones. It is widely known that a rectangular window contains sidelobes. To improve the previous proposed method with high dynamic range, this paper introduces a cosine window, which contains less sidelobes, for modeling sound pressures instead of a conventional rectangular window. Computer simulation results show that the proposed method using a cosine window can control sound field more accurately than that using a simple rectangular window. In addition, a linear array of 64 loudspeakers was actually implemented and the measurement results show that the proposed methods outperform the conventional energy difference maximization method. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | multizone / loudspeaker array / spatial Fourier transform / spatial filtering / window function |
| Paper # | EA2015-15 |
| Date of Issue | 2015-07-27 (EA) |
| Conference Information | |
| Committee | EA / ASJ-H |
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| Conference Date | 2015/8/3(2days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Tohoku Univ., Research Inst. of Electrical Communication |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | Engineering/Electro Acoustics, Psychological and Physiological Acoustics, and Related Topics |
| Chair | Yoichi Haneda(Univ. of Electro-Comm.) / Masato Akagi(JAIST) |
| Vice Chair | Yukio Iwaya(Tohoku Gakuin Univ.) / Mitsunori Mizumachi(Kyushu Inst. of Tech.) / Shigeto Furukawa(NTT) |
| Secretary | Yukio Iwaya(NTT) / Mitsunori Mizumachi(KDDI R&D Labs.) / Shigeto Furukawa(Tokai Univ.) |
| Assistant | Shoichi Koyama(Univ. of Tokyo) |
| Paper Information | |
| Registration To | Technical Committee on Engineering Acoustics / Auditory Research Meeting |
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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) | loudspeaker array |
| Keyword(3) | spatial Fourier transform |
| Keyword(4) | spatial filtering |
| Keyword(5) | window function |
| 1st Author's Name | Takuma Okamoto |
| 1st Author's Affiliation | National Institute of Information and Communications Technology(NICT) |
| 2nd Author's Name | Atsushi Sakaguchi |
| 2nd Author's Affiliation | Panasonic Corporation(Panasonic) |
| Date | 2015-08-03 |
| Paper # | EA2015-15 |
| Volume (vol) | vol.115 |
| Number (no) | EA-169 |
| Page | pp.pp.29-34(EA), |
| #Pages | 6 |
| Date of Issue | 2015-07-27 (EA) |