Sound-capture and listening system for head equipment in noisy environment
US6058194A · kind A · utility
13Cited by
8References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 26, 1997 |
| Grant date | May 2, 2000 |
| Priority date | — |
| Expiry date | Sep 26, 2017 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04R3/04
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
The system of the invention includes a sound-capture and listening system for a helmet in a noisy environment, and is characterized in that it includes, on the sound-capture side, at least one microphone (20) followed by a sampling device (25), by a decimator (26), by a device (27) for compensating for signal distortions arising within the whole of the upstream acoustic chain, and on the listening side, an interpolator (5) followed by a device for compensating for the defects of audiometry of the operator (6) and by an active noise reduction loop (10, 11, 7, 12, 13, 14).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.