US 11,785,380 B2
Hybrid audio beamforming system
Wenshun Tian, Palatine, IL (US); John Casey Gibbs, Chicago, IL (US); Michael Ryan Lester, Colorado Springs, CO (US); and Mathew T. Abraham, Colorado Springs, CO (US)
Assigned to Shure Acquisition Holdings, Inc., Niles, IL (US)
Filed by Shure Acquisition Holdings, Inc., Niles, IL (US)
Filed on Jan. 27, 2022, as Appl. No. 17/586,213.
Claims priority of provisional application 63/142,711, filed on Jan. 28, 2021.
Prior Publication US 2022/0240008 A1, Jul. 28, 2022
Int. Cl. H04R 3/00 (2006.01)
CPC H04R 3/005 (2013.01) [H04R 2201/401 (2013.01)] 27 Claims
OG exemplary drawing
 
1. A beamforming system, comprising:
a first beamformer configured to generate a first beamformed signal based on first frequency band signals derived from a plurality of audio signals, wherein the first beamformer is configured to process the first frequency band signals using a first beamforming technique comprising a delay and sum beamforming technique preformed in the time domain;
a second beamformer configured to generate a second beamformed signal based on second frequency band signals derived from the plurality of audio signals, wherein the second beamformer is configured to process the second frequency band signals using a second beamforming technique, wherein the second frequency band signals comprise a first group and a second group, and wherein the second beamformer is further configured to process the first group using a superdirective beamforming technique performed in the frequency domain, and process the second group using a delay and sum beamforming technique in the frequency domain; and
an output generation unit in communication with the first and second beamformers, the output generation unit configured to generate a beamformed output signal based on the first beamformed signal and the second beamformed signal.