Patent ID: 9210499
Filing Date: 2015-12-08
Classification: H04R

Abstract:
1. A device comprising: a first microphone and a second microphone that are separated by a predefined distance, and that are configured to receive source signals and output respective first and second microphone signals based on received source signals; and a signal processor configured to: calculate a phase difference between the first and the second microphone signals based on the predefined distance, calculate an angular distance between directions of arrival of the source signals and a desired capture direction based on the phase difference; and calculate directional-filter coefficients based on the angular distance, wherein the signal processor is configured to filter undesired source signals from an output of the signal processor based on the directional-filter coefficients, wherein the signal processor is configured to replace at least one of the directional-filter coefficients of a first range of subbands with an average value of the directional-filter coefficients for a second range of subbands.