Lowenstein Sandler LLP
Concentric circular differential microphone arrays and associated beamforming
A differential microphone array includes a plurality of microphones situated on a substantially planar platform, the plurality of microphones including a total number (M) of microphones and at least two subsets of the plurality of microphones situated along at least two substantially concentric ellipses with respect to a center, 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, in which the minimum-norm beamformer has a differential order (N), and wherein M>N+1.
NORTHWESTERN POLYTECHNICAL UNIVERSITY
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additional additional inventional inventional
Jacob Gongping Jingdong
Benesty Huang Chen