Flexible geographically-distributed differential microphone array and associated beamformer
US11159879B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 16, 2018 |
| Grant date | Oct 26, 2021 |
| Priority date | — |
| Expiry date | Jul 16, 2038 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04R2430/21
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A differential microphone array includes a plurality of microphones situated on a substantially planar platform and a processing device, communicatively coupled to the plurality of microphones, to receive a plurality of electronic signals generated by the plurality of microphones responsive to a sound source and execute a minimum-norm beamformer to calculate an estimate of the sound source based on the plurality of electronic signals, wherein the minimum-norm beamformer is determined subject to a constraint that an approximation of a beampattern associated with the differential microphone array substantially matches a target beampattern.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.