Method and arrangement for improving leak tolerance of an earpiece
US6788798B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Oct 5, 1998 |
| Grant date | Sep 7, 2004 |
| Priority date | — |
| Expiry date | Oct 5, 2018 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04R2499/11
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
The invention relates to an arrangement for improving leak tolerance in an earpiece. The invention can be applied preferably in teleterminals, particularly in mobile stations. One idea of the invention is that an acoustic return path (314, 313, 311, 312, 320) is directed from the back part of the earpiece capsule (301) to a volume (307) between the earpiece (300) and the user's ear. By means of the solution according to the invention an optimum, controlled load is achieved particularly for low frequencies, such that a change in the volume (307) between the earpiece and the ear only has a minor effect on the volume and quality of the sensed sound. By means of the solution a good leak tolerance is achieved, even though the volume to be arranged behind the earpiece capsule is small.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.