Audio transducer with controlled flexibility diaphragm
US5198624A · kind A · utility
4Cited by
43References
13Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 14, 1989 |
| Grant date | Mar 30, 1993 |
| Priority date | — |
| Expiry date | Nov 14, 2009 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04R9/025
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An improved audio transducer includes a diaphragm having a pair of cylindrically-shaped webs that provide greater bandwidth, reduced distortion and greater horizontal dispersion of sound. The audio output of the transducer is further improved by forming the diaphragm of a polyvinyl fluoride film. Other improvements include the use of damping pads to damp internal sound waves and damping strips on the diaphragm to minimize distortion at the resonant frequency of the transducer. In one alternative embodiment a laminated diaphragm is used to damp resonance in the high-frequency end of the transducer operating range.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.