2013 Fiscal Year Final Research Report
A high accurate and efficient digitally direct driven speaker system for 1 kW applications for an electrical machine system
| Project/Area Number |
23560416
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Research Field |
Electron device/Electronic equipment
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| Research Institution | Hosei University |
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Principal Investigator |
YASUDA Akira 法政大学, 理工学部, 教授 (30339501)
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| Project Period (FY) |
2011 – 2013
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| Keywords | 電子デバイス・集積回路 / デジタル直接駆動スピーカ / デジタル / スピーカ / 高効率 / 大出力 |
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| Research Abstract |
The aim of this research is improving the power efficiency of a high power loud-speaker system. In order to improve the power efficiency, a digitally direct driven speaker system technology (DDDSP) is applied to the high power system. Increasing number of actuators (ACT), output power and sound presser level can be increased. Decreasing number of ACT during low output power, the low power efficiency can be improved. High power system with 80% power-efficiency and 100 dB of SNR, whose output power is 0.1 to 1 kW, has been realized.
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