Patent ID: 7082204
Filing Date: 2006-07-25
Classification: H04R

Abstract:
1. A method of operating an electronic device, comprising: generating a first microphone signal via a first microphone; generating a second microphone signal via a second microphone; determining cross correlation coefficients for the first and the second microphone signals; determining first autocorrelation coefficients for the first microphone signal; determining second autocorrelation coefficients for the second microphone signal; summing the cross correlation coefficients to generate a spatial correlation sum; summing the first autocorrelation coefficients to generate a first autocorrelation sum; summing the second autocorrelation coefficients to generate a second autocorrelation sum; multiplying the first autocorrelation sum by the spatial correlation sum to generate a first correlation product: multiplying the second autocorrelation sum by the spatial correlation sum to generate a second correlation product; and determining the presence of a noise component of at least one of the first and second microphone signals based on the first and/or second correlation products.