Modular microphone assembly
US4937877A · kind A · utility
18Cited by
5References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 14, 1988 |
| Grant date | Jun 26, 1990 |
| Priority date | — |
| Expiry date | Sep 14, 2008 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04R1/08
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A modular microphone assembly housed in a handsfree telephone apparatus provides an environment that is isolated from a loudspeaker installed within the apparatus and through which environment the directional and frequency response characteristics of a directional microphone capsule contained within a closable cavity of a microphone mounting receptacle in the assembly are altered via a predetermined internal surface configuration of the receptacle to improve the performance of the apparatus.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.