Method and system for noise reduction
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United States of America Patent
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Mar 15, 2016
Grant Date -
Mar 6, 2014
app pub date -
Nov 7, 2013
filing date -
Mar 23, 2009
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Abstract
A method for noise reduction is provided including: beamforming audio signals sampled by a microphone array to get a signal with an enhanced target voice and a signal with a weakened target voice; locating a target voice in the audio signal sampled by the microphone array; determining a credibility of the target voice when the target voice is located; updating an adaptive filter coefficient according to the credibility, and filtering the signal with the enhanced target voice and the signal with the weakened target voice according to the updated adaptive filter coefficient to get a signal with reduced noise; and weighing a voice presence probability by the credibility, and enhancing the signal with reduced noise according to the weighed voice presence probability.
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