Signal processing device and noise strength determining method
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United States of America Patent
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Aug 28, 2018
Grant Date -
Dec 8, 2016
app pub date -
Mar 10, 2016
filing date -
Jun 3, 2015
priority date (Note) -
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Abstract
A signal processing device (1) includes a noise generator (11) configured to have a noise strength set therein and to output a noise with a set noise strength; a noise adder (12) configured to add the noise to an input signal including a weak signal as a measurement target to generate a noise-added signal; a threshold processing circuit (13) configured to perform threshold processing on the noise-added signal; an evaluating circuit (20) configured to extract, from an output signal output from the threshold processing circuit, a pulse signal component that meets a pulse waveform condition and to evaluate the extracted pulse signal; and a strength setting circuit (31) configured to set, in the noise generator, a noise strength to a desired value based on an output from the evaluating circuit.
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