Patent ID: 9628905
Date: 2017-04-18
CPC Classifications: H04R,H04S

Claim:
1. A method for processing audio signals from an array of audio sensors, the method comprising: (a) generating a plurality of eigenbeams from the audio signals; (b) steering two or more of the eigenbeams to a specified direction; (c) adaptively generating two or more weighting coefficients for the two or more eigenbeams based on first and second constraints, wherein the two or more weighting coefficients are required to satisfy the first constraint of having only non-negative values and the second constraint of summing to a specified value; (d) respectively applying the two or more adaptively generated weighting coefficients to the two or more steered eigenbeams to generate two or more weighted, steered eigenbeams; and (e) combining the two or more weighted, steered eigenbeams to generate an output audio signal.