Dynamic adjustment of signal enhancement filters for a microphone array
US10638252B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | May 20, 2019 |
| Grant date | Apr 28, 2020 |
| Priority date | — |
| Expiry date | May 20, 2039 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04S2420/01
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An audio assembly includes a microphone assembly, a controller, and a speaker assembly. The microphone assembly detects audio signals. The detected audio signals originate from audio sources located within a local area. Each audio source is associated with a respective beamforming filter. The controller determines beamformed data using the beamforming filters associated with each audio source and a relative contribution of each of the audio sources using the beamformed data. The controller generates updated beamforming filters for each of the audio sources based in part on the relative acoustic contribution of the audio source, a current location of the audio source, and a transfer function associated with audio signals produced by the audio source. The controller generates updated beamformed data using the updated beamforming filters and performs an action (e.g., via the speaker assembly) based in part on the updated beamformed data.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.