METHOD AND APPARATUS FOR SUPPRESSING WIND NOISE

摘要

The invention includes a method, apparatus, and computer program to selectively suppress wind noise while preserving narrow-band signals in acoustic data. Sound from one or several microphones is digitized into binary data. A time-frequency transform is applied to the data to produce a series of spectra. The spectra are analyzed to detect the presence of wind noise and narrow band signals. Wind noise is selectively suppressed while preserving the narrow band signals. The narrow band signal is interpolated through the times and frequencies when it is masked by the wind noise. A time series is then synthesized from the signal spectral estimate that can be listened to. This invention overcomes prior art limitations that require more than one microphone and an independent measurement of wind speed. Its application results in good-quality speech from data severely degraded by wind noise.

主权项

1. A method for attenuating noise in a signal detected by a sound detector device, comprising:
performing a time-frequency transform on the signal to obtain transformed data; performing signal analysis on the transformed data, by a processor, to identify wind noise in the transformed data that is caused by wind pressure fluctuations associated with wind striking a portion of the sound detector device; and attenuating at least a portion of the wind noise identified in the transformed data.