| Presentation | 2021-07-15 Beam Control Based on Multi-phased Array for Parametric Array Loudspeaker Yuting Geng, Haonan Wang, Masato Nakayama, Takanobu Nishiura, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | Parametric array loudspeaker (PAL) can achieve a super directivity utilizing the straightness of ultrasounds. How- ever, there is a tendency that the demodulated sound-beam is easy to spread in small-scale PALs. In this paper, we proposed a beam control method for small-scale PAL using multi-phased array. Specifically, the demodulated sound-beam is controlled by emitting amplitude modulated wave with phase-inverted components from ultrasonic transducers on the outer circumference. Finally, we confirmed the effectiveness of the proposed method by evaluation experiments. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Parametric array loudspeaker / Parametric effect / Phase-inversion / Reproduction area control |
| Paper # | EA2021-5 |
| Date of Issue | 2021-07-08 (EA) |
| Conference Information | |
| Committee | EA / ASJ-H |
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| Conference Date | 2021/7/15(2days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Online |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | Engineering/Electro Acoustics, Psychological and Physiological Acoustics, Speech, Musical Acoustics, Education in Acoustics, and Related Topics |
| Chair | Yoshinobu Kajikawa(Kansai Univ.) |
| Vice Chair | Kenichi Furuya(Oita Univ.) / Shoichi Koyama(Univ. of Tokyo) |
| Secretary | Kenichi Furuya(NTT) / Shoichi Koyama(RitsumeikanUniv.) |
| Assistant | Yukou Wakabayashi(Tokyo Metropolitan Univ.) / Tatsuya Komatsu(LINE) |
| 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) | Beam Control Based on Multi-phased Array for Parametric Array Loudspeaker |
| Sub Title (in English) | |
| Keyword(1) | Parametric array loudspeaker |
| Keyword(2) | Parametric effect |
| Keyword(3) | Phase-inversion |
| Keyword(4) | Reproduction area control |
| 1st Author's Name | Yuting Geng |
| 1st Author's Affiliation | Ritsumeikan University(Ritsumeikan Univ.) |
| 2nd Author's Name | Haonan Wang |
| 2nd Author's Affiliation | Ritsumeikan University(Ritsumeikan Univ.) |
| 3rd Author's Name | Masato Nakayama |
| 3rd Author's Affiliation | Osaka Sangyo University(Osaka Sangyo Univ.) |
| 4th Author's Name | Takanobu Nishiura |
| 4th Author's Affiliation | Ritsumeikan University(Ritsumeikan Univ.) |
| Date | 2021-07-15 |
| Paper # | EA2021-5 |
| Volume (vol) | vol.121 |
| Number (no) | EA-112 |
| Page | pp.pp.24-29(EA), |
| #Pages | 6 |
| Date of Issue | 2021-07-08 (EA) |