Methods and apparatuses for echo cancellation with beamforming microphone arrays
US9854101B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 10, 2016 |
| Grant date | Dec 26, 2017 |
| Priority date | — |
| Expiry date | Feb 10, 2036 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04R2499/11
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
This disclosure describes a method to manufacture a conferencing apparatus for echo cancelation with beamforming microphone arrays. This method provides a beamforming microphone array for developing a plurality of microphone signals, where each microphone of the beamforming microphone array is configured to sense acoustic waves from a direction vector substantially different from other microphones in the beamforming microphone array. Additionally provided is a memory configured for storing computing instructions. Operably coupled is a processor that executes computing instructions to:perform a beamforming operation to combine the plurality of microphone signals to a plurality of combined signals that includes a number of signals between one and a number of signals in the plurality of microphone signals, each of the plurality of combined signals corresponding to a different fixed beam; andperform an acoustic echo cancelation operation on the plurality of combined signals to generate a plurality of combined echo-canceled signals.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.