ACOUSTIC SIGNAL DETECTION SYSTEM, ACOUSTIC SIGNAL DETECTION SERVER, VIDEO SIGNAL SEARCH DEVICE, VIDEO SIGNAL SEARCH METHOD, VIDEO SIGNAL SEARCH PROGRAM AND RECORDING MEDIUM, SIGNAL SEARCH DEVICE, SIGNAL SEARCH METHOD, SIGNAL SEARCH PROGRAM, AND RECOR

摘要

An acoustic signal detection system searches for a portion similar to a target acoustic signal from accumulated acoustic signals. The acoustic signal detection system includes: an accumulation characteristic calculation unit for calculating the accumulation characteristic from the time series data on the accumulated acoustic signal; a target characteristic calculation unit for calculating a target characteristic from the time series data on the target acoustic signal; an accumulation characteristic area selection unit for selecting an element having an accumulation characteristic statistic amount exceeding a threshold value from the accumulation characteristic and obtaining the accumulation area selection characteristic formed by the selected elements; a target characteristic area selection unit for selecting an element having a target characteristic statistic amount exceeding a threshold value from the target characteristic and obtaining the target area selection characteristic formed by the selected elements; and a characteristic correlation unit for setting a correlation section in the accumulation area selection characteristic and calculating the similarity of the correlation section in the target and the accumulation area selection characteristic.