Electrical-acoustic transformation device and electronic device
US10291991B2 · kind B2 · utility
7Cited by
1References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 17, 2015 |
| Grant date | May 14, 2019 |
| Priority date | — |
| Expiry date | Dec 17, 2035 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04R2499/11
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Disclosed are an electrical-acoustic transformation device and an electronic device, including a moving coil electrical-acoustic transformation unit and a piezoelectric buzzer. The electrical-acoustic transformation device in the present invention has a moving coil sound generating structure and a piezoelectric sound generating structure. The piezoelectric plate compensates the high-frequency response of a vibrating system, realizing an electrical-acoustic transformation device with good performance and super wideband.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.