Noise masking communications apparatus
US8948418B2 · kind B2 · utility
3Cited by
7References
21Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Nov 13, 2007 |
| Grant date | Feb 3, 2015 |
| Priority date | — |
| Expiry date | Aug 13, 2030 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04R1/083
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A communications headset has a microphone boom that is moveable through various distances from the user's mouth, in which movement of the boom operates electrical, mechanical or acoustic mechanisms to adjust the transmit sensitivity of the headset such that the ratio of the amplitude of the output signal of the headset to the amplitude of the sound pressure at the vicinity of the user's mouth is maintained relatively constant, independently of the position of the microphone boom.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.