Noise control device
US5854848A · kind A · utility
25Cited by
11References
24Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 12, 1997 |
| Grant date | Dec 29, 1998 |
| Priority date | — |
| Expiry date | Jan 12, 2017 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04R1/342
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An apparatus for noise cancellation of ambient noise impinging upon the front surface of a pressure differential microphone. The apparatus utilizes curved reflectors to cause ambient noise which impinges on the front surface of the microphone to also impinge on the back surface of the microphone. In addition, the curved reflectors deflect a speaker's voice which is directed toward the front surface of the microphone to be deflected away from the back surface of the microphone.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.