| Presentation | 2017-05-22 A Study on Parametric Loudspeaker with Random Element Arrangement Shota Kinjo, Yoshifumi Nagata, Toyota Fujioka, Masato Abe, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | In order to suppress grating lobe in directivity pattern of parametric loudspeaker with regular transducer arrangement, parametric loudspeaker with random element arrangement was developed. Furthermore, in order to control output beam pattern of parametric loudspeaker with high precision, we compensated elements variation to be used and developed steering system. In addition, we performed computer simulation the directivity of parametric loudspeaker with random element arrangement and measured them in the anechoic room. As a result, it was confirmed that grating lobe caused by the parametric loudspeaker with regular element arrangement was suppressed by that with random element arrangement. Moreover, when the ultrasonic beam was generated using beamformer coefficient calculated by GA, it is confirmed that the performance to suppress grating lobe was improved as compared with delay compensation. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Parametric loudspeaker / random element arrangement / beamsteering / genetic algorithms |
| Paper # | US2017-16 |
| Date of Issue | 2017-05-15 (US) |
| Conference Information | |
| Committee | US |
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| Conference Date | 2017/5/22(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | |
| Chair | Minoru Kurosawa(Tokyo Inst. of Tech.) |
| Vice Chair | Nobuyuki Endo(Kanagawa Univ.) |
| Secretary | Nobuyuki Endo(Univ. of Toyama) |
| Assistant | Takenobu Tsuchiya(Kanagawa Univ.) |
| Paper Information | |
| Registration To | Technical Committee on Ultrasonics |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | A Study on Parametric Loudspeaker with Random Element Arrangement |
| Sub Title (in English) | |
| Keyword(1) | Parametric loudspeaker |
| Keyword(2) | random element arrangement |
| Keyword(3) | beamsteering |
| Keyword(4) | genetic algorithms |
| 1st Author's Name | Shota Kinjo |
| 1st Author's Affiliation | Iwate University(Iwate Univ.) |
| 2nd Author's Name | Yoshifumi Nagata |
| 2nd Author's Affiliation | Iwate University(Iwate Univ.) |
| 3rd Author's Name | Toyota Fujioka |
| 3rd Author's Affiliation | Iwate University(Iwate Univ.) |
| 4th Author's Name | Masato Abe |
| 4th Author's Affiliation | Iwate University(Iwate Univ.) |
| Date | 2017-05-22 |
| Paper # | US2017-16 |
| Volume (vol) | vol.117 |
| Number (no) | US-41 |
| Page | pp.pp.13-18(US), |
| #Pages | 6 |
| Date of Issue | 2017-05-15 (US) |