Method and apparatus for noise reduction and data compression
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United States of America Patent
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Sep 23, 2014
Grant Date -
Dec 8, 2011
app pub date -
Nov 12, 2010
filing date -
Nov 12, 2009
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Abstract
A method and apparatus for carrying out noise reduction in data regarding parameter values including the steps of making a series of measurements of parameter values at times separated by predetermined time intervals, forming a plurality of successive measurements into an array of measurements, performing n successive wavelet transforms on the array of measurements to produce an array of coefficients, comparing the values of the array of coefficients to a threshold value and, selectively changing the values of the coefficients based on their relationship to the threshold, to produce an array of filtered coefficients, and performing n successive inverse wavelet transforms on the array of filtered coefficients to produce an array of filtered measurements.
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