| Presentation | 2007/4/17 Study on Digital Modulator for Drive of Parametric loudspeaker HIDETOSHI Aiko, KENTA Nomura, KENICHI Aoki, TOMOO Kamakura, SHINICHI Sakai, SYUNJI Yoshida, |
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| PDF Download Page | PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | A parametric loudspeaker whose directivity is very sharp is promisingly expected as a directive aodio system. The loudspeaker has been technically developed and advanced for practical use so far. However, several problems remain still unclear such as sound quality and conversion efficiency. To overcome such problems, we propose the Weaver SSB modulation for a carrier ultrasound in place of the conventional envelope modulation. It has been shown experimentally that the Weaver modulation is superior in less distortion and linearity to the envelope modulation. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | parametric loudspeaker / Digital modulator / Envelope / Weaver method / SSB |
| Paper # | US2007-6 |
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| Committee | US |
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| Conference Date | 2007/4/17(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
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| Paper Information | |
| Registration To | Ultrasonics (US) |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Study on Digital Modulator for Drive of Parametric loudspeaker |
| Sub Title (in English) | |
| Keyword(1) | parametric loudspeaker |
| Keyword(2) | Digital modulator |
| Keyword(3) | Envelope |
| Keyword(4) | Weaver method |
| Keyword(5) | SSB |
| 1st Author's Name | HIDETOSHI Aiko |
| 1st Author's Affiliation | The University of Electro-Communications() |
| 2nd Author's Name | KENTA Nomura |
| 2nd Author's Affiliation | The University of Electro-Communications |
| 3rd Author's Name | KENICHI Aoki |
| 3rd Author's Affiliation | The University of Electro-Communications |
| 4th Author's Name | TOMOO Kamakura |
| 4th Author's Affiliation | The University of Electro-Communications |
| 5th Author's Name | SHINICHI Sakai |
| 5th Author's Affiliation | Mitsubishi Electric Engineering Co., Ltd. |
| 6th Author's Name | SYUNJI Yoshida |
| 6th Author's Affiliation | Mitsubishi Electric Engineering Co., Ltd. |
| Date | 2007/4/17 |
| Paper # | US2007-6 |
| Volume (vol) | vol.107 |
| Number (no) | 20 |
| Page | pp.pp.- |
| #Pages | 6 |
| Date of Issue | |