Wind noise detection and suppression
US8781137B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Aug 25, 2010 |
| Grant date | Jul 15, 2014 |
| Priority date | — |
| Expiry date | Jan 18, 2032 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04R2430/03
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Wind noise is detected in and removed from an acoustic signal. Features may be extracted from the acoustic signal. The extracted features may be processed to classify the signal as including wind noise or not. The wind noise may be removed before or during processing of the acoustic signal. The wind noise may be suppressed by estimating a wind noise model, deriving a modification, and applying the modification to the acoustic signal. In audio devices with multiple microphones, the channel exhibiting wind noise (i.e., acoustic signal frame associated with the wind noise) may be discarded for the frame in which wind noise is detected.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.