US 12,002,483 B2 · Systems and methods for reducing wind noise

Abstract

The disclosure is generally directed to a system for reducing wind noise. A system includes one or more processors coupled to a non-transitory computer-readable storage medium having instructions encoded thereon that, when executed by the one or more processors, cause the one or more processors to obtain signals respectively generated from two or more microphones during a time period, the signals representing acoustic energy detected by the two or more microphones during the time period, determine a coherence between the signals, and determine a filter based on the coherence. The filter is configured to reduce wind noise in one or more of the signals.

Claims15

Dependent claims

A system comprising:

one or more processors coupled to a non-transitory computer-readable storage medium having instructions encoded thereon that, when executed by the one or more processors, cause the one or more processors to:
obtain signals respectively generated from two or more microphones during a time period, the signals representing acoustic energy detected by the two or more microphones during the time period;
determine a coherence between the signals and a spectral gain between the signals based at least on the coherence;
and
determine and apply a filter as a convolution of the spectral gain based on the coherence and a band-pass filter configured to cutoff frequencies outside an audible range, the filter comprising an absolute value of the convolution of the spectral gain;
and
wherein the filter is configured to reduce wind noise in one or more of the signals.

4 more elements

A device comprising:

a input/output interface configured to receive signals from multiple microphones;
and one or more processors coupled to a non-transitory computer-readable storage medium having instructions encoded thereon that, when executed by the one or more processors, cause the one or more processors to:
obtain a first signal generated from a first microphone;
obtain a second signal generated from a second microphone, wherein the first signal and the second signal correspond to a time period;
determine a spectral gain between the first signal and second signal based at least on a coherence between the first signal and the second signal;
and
generate and apply a filter based at least on a convolution of the spectral gain the coherence and a band-pass filter configured to cutoff frequencies outside an audible range, the filter comprising an absolute value of the convolution of the spectral gain;
and
wherein the filter is configured to reduce an amount of wind noise detected by the first and second microphones.

6 more elements

Dependencies are inferred from the claim text.

Systems and methods for reducing wind noise

Life of this patent

Systems and methods for reducing wind noise

Life of this patent

Abstract

Claims15