Telephone loudspeaker enclosure
US6526150B2 · kind B2 · utility
29Cited by
12References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 10, 1998 |
| Grant date | Feb 25, 2003 |
| Priority date | — |
| Expiry date | Jul 10, 2018 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04R1/025
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
An apparatus for a microphone and speaker is provided which provides a sealed chamber behind the speaker to prevent sound waves behind the speaker from cancelling sound waves in front of the speaker. In addition, the apparatus is configured to mechanically isolate the speaker from the apparatus housing in order to improve performance of the system. A pliant material such as a damping material with a relatively linear compression characteristic, such as a thermal plastic elastomer, may be used to isolate the speaker from the apparatus housing as well as providing a relatively air tight chamber behind the speaker.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.