Audio conference device having echo canceller
US5778085A · kind A · utility
34Cited by
3References
6Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Apr 23, 1996 |
| Grant date | Jul 7, 1998 |
| Priority date | — |
| Expiry date | Apr 23, 2016 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04M1/20
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
In an audio conference device for housing an acoustic echo canceller function, a speaker and a microphone in a portable frame, a microphone 5 is provided in a tubular elastic member 4 whose tip end has been protruded in the shape of a funnel. This elastic member 4 is mounted so that its funnel-shaped tip end protrudes outwardly from the frame. With this structure, it is possible to prevent the speech sound, which propagates inside the frame from the speaker from being collected by the microphone, thus making it possible to reduce the degree of acoustic combination between the microphone and the speaker.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.