Patent ID: 8953817
Filing Date: 2015-02-10
Classification: H04R,H04S

Abstract:
1. A method of producing a directional output signal including the steps of: detecting sounds at the left and rights sides of a person's head to produce left and right signals; determining the similarity of the signals on each side of the head to determine left and right directional filter weights, wherein determining left and right directional filter weights comprises either comparing the left and right signals' cross-power and auto-power by adding the cross-power to the auto-power and dividing the cross-power by the result, or comparing the left and right signals' cross-correlation and auto-correlation by adding the cross-correlation to the auto-correlation and dividing the cross-correlation by the result; modifying both the left and right signals by way of a filter block using the left and right directional filter weights respectively; and combining the modified left and right signals to produce an output signal.