SIGNAL DETECTION DEVICE, SIGNAL DETECTION METHOD, AND RECORDING MEDIUM
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Jun 20, 2016
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Jun 26, 2015
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Even a small sound for which a change in a histogram is small can be accurately detected. A signal detection device includes signal input means for inputting signals acquired by a plurality of sensors, cross-correlation function calculation means for calculating cross-correlation functions for each predetermined number of samples, based on the signals, and background noise model derivation means for deriving a background noise model, based on the cross-correlation functions; and detection means for detecting a change in the signals, based on comparison of values of the cross-correlation functions with the background noise model.
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