Method to reduce acoustic coupling in audio conferencing systems
US7724891B2 · kind B2 · utility
43Cited by
6References
9Claims
0Family size
Assignee
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Key dates
| Filing date | Jul 22, 2004 |
| Grant date | May 25, 2010 |
| Priority date | — |
| Expiry date | Jan 18, 2029 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04R2430/20
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method to reduce acoustic coupling in an audio conferencing system having a loudspeaker and a plurality of microphones, comprising detecting the presence of one of either a source of near-end signal or a source of far-end signal source relative to the audio conferencing system, and in the event of detecting a source of near-end signal then processing the near-end signal with high directivity towards the near-end source, and in the event of detecting a source of far-end signal or double-talk then processing the far-end signal with high coupling characteristics between the loudspeaker and microphones.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.