REFRIGERATOR STATUS DETERMINATION DEVICE AND REFRIGERATOR STATUS DETERMINATION METHOD

摘要

A refrigerator status determination device (30) equipped with: an acoustic signal acquisition unit (31) that acquires an acoustic signal, which is time-series data for the magnitude of a signal for the sound of the operation of a refrigerator (10); an acoustic characteristic data extraction unit (32) that extracts acoustic characteristic data, which is time-series data for the signal strength of a predetermined frequency component, from the acoustic signal; a status determination unit (34) that determines the status of the refrigerator (10) on the basis of the acoustic characteristic data; and a determination result output unit (35) that outputs information indicating the status of the refrigerator (10) as determined by the status determination unit (34).