Filtering of a sound signal acquired by a voice recognition system
US11138986B2 · kind B2 · utility
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3References
18Claims
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Key dates
| Filing date | Sep 19, 2019 |
| Grant date | Oct 5, 2021 |
| Priority date | — |
| Expiry date | Jan 29, 2040 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG10L2015/223
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A method for filtering a sound signal acquired by a voice recognition system is proposed wherein the filter used to delete the unwanted sound signal is based on a noise model created from a history of preceding acquisitions of the sound signal. The method is based on the history for predicting the characteristics of the signal in the course of acquisition and relies on this prediction to establish the noise model used by the filtering function.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.