Impedance matched horn having impedance matched to impedance of an ear
US6907121B1 · kind B1 · utility
7Cited by
6References
19Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jun 16, 2000 |
| Grant date | Jun 14, 2005 |
| Priority date | — |
| Expiry date | Nov 10, 2021 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04R2499/11
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
An acoustic horn has an acoustic impedance matched with impedances of an ear and a driver. The acoustic horn can be used in an electroacoustic transducer including the driver, and the acoustic horn. The electroacoustic transducer is particularly well-suited for use in portable device such as a radiotelephone, pager, or other device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.