US 12,267,645 B1
Acoustic-feedback-informed far-field beamforming
Pablo Francisco Faundez Hoffmann, Kenmore, WA (US); and Francesco Nesta, Aliso Viejo, CA (US)
Assigned to META PLATFORMS TECHNOLOGIES, LLC, Menlo Park, CA (US)
Filed by Meta Platforms Technologies, LLC, Menlo Park, CA (US)
Filed on Dec. 22, 2022, as Appl. No. 18/086,860.
Claims priority of provisional application 63/392,964, filed on Jul. 28, 2022.
Int. Cl. H04R 1/40 (2006.01)
CPC H04R 1/406 (2013.01) 20 Claims
OG exemplary drawing
 
1. A method comprising:
detecting sound using acoustic sensors;
beamforming the sound detected by a first set of the acoustic sensors to form a first beamformed signal;
beamforming the sound detected by a second set of the acoustic sensors to form a second beamformed signal;
weighting the first beamformed signal and the second beamformed signal according to a beamforming coefficient to mitigate acoustic feedback; and
combining the first weighted beamformed signal and the second weighted beamformed signal to form an output audio signal.