Real-time noise reduction system for dynamic motor frequencies aboard an unmanned aerial vehicle (UAV)
US9489937B1 · kind B1 · utility
65Cited by
3References
22Claims
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Key dates
| Filing date | Mar 9, 2015 |
| Grant date | Nov 8, 2016 |
| Priority date | — |
| Expiry date | Apr 13, 2035 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG10L2021/02166
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
Systems and methods for simultaneously capturing live audio and video feeds and reducing motor/rotor noise associated with the video feed for a multirotor unmanned aerial vehicle (UAV). Noise reduction occurs in real time or near real time as one or more frequencies associated with a motor, rotor, or attitude of the UAV are recognized, subtracted and/or dithered from the audio feed, resulting in one or more correction signals. The one or more correction signals may be dynamically summed in order to generate a corrected audio feed for transmission.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.