Response-modifying acoustic couplers for hearing aids
US4677675A · kind A · utility
98Cited by
4References
12Claims
0Family size
Inventors
Key dates
| Filing date | Sep 17, 1985 |
| Grant date | Jun 30, 1987 |
| Priority date | — |
| Expiry date | Sep 17, 2005 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04R2225/0213
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Response-modifying acoustic couplers are provided for use between an output port of a hearing aid unit and an earmold at the entrance to the ear of a wearer, including a passage and a chamber which respectively provide a high acoustic inertance and a high acoustic compliance to cooperate with other acoustic elements and to form an acoustic network producing a predetermined frequency response characteristic.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.