SLEEP PREVENTING DEVICE, SLEEP PREVENTING PROGRAM, AND STORAGE MEDIUM

摘要

A navigation device (1) includes a loudspeaker (2) having the function as an output unit for outputting a sound, a microphone (3) having the function as an input unit for inputting a sound, and an alarm unit (4) having the function as an alarm unit for issuing an alarm when no sound is inputted to the microphone (3) after a sound is outputted from the loudspeaker (2). A ROM (6) contains a sleep preventing program causing a computer to serve as a generation unit for generating an alarm signal when no sound is inputted after a sound is outputted, a selection unit for selecting a sound to be outputted according to the sound volume inputted, and an instruction unit for instructing an output of sound data when the current position is on a predetermined road.