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1. (WO2018089552) CONTROLLING WIND NOISE IN A BILATERAL MICROPHONE ARRAY

Pub. No.:    WO/2018/089552    International Application No.:    PCT/US2017/060719
Publication Date: Fri May 18 01:59:59 CEST 2018 International Filing Date: Thu Nov 09 00:59:59 CET 2017
IPC: H04R 1/10
H04R 1/40
H04R 3/00
H04R 5/033
G10L 21/0208
Applicants: BOSE CORPORATION
Inventors: TERMEULEN, Ryan
Title: CONTROLLING WIND NOISE IN A BILATERAL MICROPHONE ARRAY
Abstract:
A pair of earphones have microphone arrays each providing a plurality of microphone signals. A processor receives the microphone signals and applies a first set of filters to a subset of the plurality of microphone signals from each of the arrays, the first set of filters inverting the signals below a cutoff frequency, and provides the first-filtered signals and the remainder of the microphone signals from each of the arrays to a second set of filters. The processor uses the second set of filters to combine the signals to generate a far-field signal that is more sensitive to sounds originating a short distance away from the earphones than to sounds close to the earphones above the cutoff frequency and omnidirectional below the cutoff frequency, determines a level of wind noise present in the microphone signals, and adjusts the cutoff frequency as a function of the determined level of wind noise, and provides the far-field signal to the speakers for output.