Patent ID: 9185487
Filing Date: 2015-11-10
Classification: G10L,H04R

Abstract:
1. A method for suppressing noise, comprising: receiving at least a primary acoustic signal from a primary microphone and a secondary acoustic signal from a different, secondary microphone; applying a coefficient to the primary acoustic signal to generate a desired signal component, the coefficient representing a source location, the desired signal component not being a function of the secondary acoustic signal; subtracting the desired signal component from the secondary acoustic signal to obtain a noise component signal; performing a first determination of at least one energy ratio related to the desired signal component and the noise component signal; performing a second determination of whether to adjust the noise component signal based on the at least one energy ratio; adjusting the noise component signal based on the second determination; subtracting the adjusted noise component signal from the primary acoustic signal to generate a noise subtracted signal; and outputting the noise subtracted signal.