Acoustic transducer with selective driving force distribution
US6154557A · kind A · utility
26Cited by
15References
24Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 21, 1998 |
| Grant date | Nov 28, 2000 |
| Priority date | — |
| Expiry date | May 21, 2018 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04R7/04
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An acoustic transducer with partially driven area of the diaphragm such that the driving forces are asymmetric with respect to the frame axis of symmetry or angled with respect to edges of diaphragm support frame to provide uniform frequency response of the transducer. The elongate magnet sections surround portions of the diaphragm with a fringing magnetic field within which a circuit of conductor strips is positioned such that selectively excited vibration modes of the diaphragm provide a smooth frequency response.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.