PROBLEM TO BE SOLVED: To obtain a mechanism for sure detection while casually watching in a simple method when a failure occurs in a life of an elderly solitary person with an increase in elderly solitary person households.;SOLUTION: A person's actions in a daily life emit unique sounds along with the respective actions. A series of actions show characteristics that these sounds are emitted in a constant order. For example, when a door chime rings, normally noise accompanying walking is heard without a lapse. When an abnormality is recognized in this pattern, some failure is predicted. Here, a mechanism is obtained for watching in a method for detection by specifying types of respective actions and occurrences from characteristics of many sounds (spectrums) emitted by the life actions and detecting a proper transition of these series of actions and occurrences.;COPYRIGHT: (C)2014,JPO&INPIT
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