SIGNAL ANALYSIS METHOD, SIGNAL ANALYSIS DEVICE AND SIGNAL ANALYSIS PROGRAM
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United States of America Patent
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Issued Date -
Oct 28, 2010
app pub date -
Sep 17, 2008
filing date -
Sep 20, 2007
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Abandoned
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Abstract
Provided is a signal analysis device that has a high frequency resolution not depending on an analysis window length and can analyze a frequency with considerably high accuracy. When the signal analysis device inputs therein an analysis object signal to be analyzed, the device obtains a frequency f′, amplitude A′ and an initial phase φ′ such that the sum of squares of a difference between the analysis object signal and a sinusoidal model signal expressed by a phase using the frequency f′ and the initial phase φ′ and by the amplitude A′ is a minimum value.
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