Simulated background noise enabled echo canceller
US8406430B2 · kind B2 · utility
2Cited by
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9Claims
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Assignee
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Key dates
| Filing date | Nov 19, 2009 |
| Grant date | Mar 26, 2013 |
| Priority date | — |
| Expiry date | Mar 21, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04M9/082
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
An apparatus may include a noise estimation unit configured to determine a noise spectrum associated with a noise signal, and generate a filter based on the determined noise spectrum. The apparatus may also include a noise synthesis unit configured to generate a colored noise using the filter generated by the noise estimation unit. The apparatus may be incorporated in an echo canceller.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.