Signal processing apparatus, signal processing method, and signal processing program
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United States of America Patent
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Jan 2, 2018
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app pub date -
Feb 26, 2014
filing date -
Mar 5, 2013
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Abstract
Disclosed is a signal processing apparatus that processes an input signal to accurately detect an abrupt change in the input signal in accordance with the degree of linear change of a phase component in a frequency domain. The signal processing apparatus includes a converter that converts the input signal into the phase component and an amplitude component in the frequency domain, a linearity calculator that calculates the linearity of the phase component in the frequency domain, and a determiner that determines presence of the abrupt change in the input signal based on the linearity calculated by the linearity calculator.
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