Active Noise Cancellation Using a Predictive Approach
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United States of America Patent
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Issued Date -
May 28, 2009
app pub date -
Nov 27, 2007
filing date -
Nov 27, 2007
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Abandoned
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Abstract
A method for active noise cancellation in a volume generates a mathematical model of a noise process to be cancelled. Using the mathematical model, a noise signal in a next sample period is predicted from a measured noise signal. The predicted signal is inverted and applied to the volume. Destructive interference of the noise signal and the inverted signal cancels the noise in the volume.
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