Apparatus with adaptive microphone configuration based on surface proximity, surface type and motion
US9351091B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 31, 2013 |
| Grant date | May 24, 2016 |
| Priority date | — |
| Expiry date | Nov 17, 2033 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04R2499/11
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An apparatus includes a group of microphones and a surface compensator that is operatively coupled to switch logic and to a signal conditioner that provides a control channel to voice recognition logic. The surface compensator may detect surfaces in proximity to the apparatus as well as the surface's acoustic reflectivity or acoustic absorptivity and may accordingly configure the group of microphones including selecting appropriate signal conditioning and beamforming based on the surface acoustic reflectivity or acoustic absorptivity and the orientation of the apparatus. Voice recognition performance is thus improved when microphones are impeded or occluded by proximate surfaces. A group of sensors of the apparatus is used by the surface compensator to detect surfaces and surface type, and to determine apparatus orientation and motion.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.