Microphone array auto-directive adaptive wideband beamforming using orientation information from MEMS sensors
US10979805B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Dec 28, 2018 |
| Grant date | Apr 13, 2021 |
| Priority date | — |
| Expiry date | Jun 1, 2039 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04R2410/05
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method and apparatus for auto-directive adaptive beamforming for a microphone array using microelectromechanical systems (MEMS) sensor orientation information are provided. The microphone array captures audio and the MEMS sensor detects an orientation of the microphone array. A direction of arrival of a source signal is estimated based on the data representative of the audio. A change in an orientation of the microphone array is detected based on the orientation and the direction of arrival is compensates based on the change in the orientation of the microphone array. The apparatus pre-steers a beam of a beam pattern of the microphone array based on the compensated direction of arrival to retain the source signal in a broadside of the microphone array and performs adaptive wideband beamforming to null one or more interfering sources in the beam pattern while retaining the source signal in the broadside of the microphone array.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.