Brain waves are often unstable at such times as immediately after going to bed for sleep, and appropriate brain wave induction therefore cannot be performed using an induction sound that is based on the frequency of brain waves at the time of going to bed for sleep. An induction sound output device for outputting an induction sound for inducing brain waves is provided with a frequency determination unit 11 for determining the frequency of an induction sound, an induction sound generating unit 12 for generating an induction sound on the basis of the frequency determined by the frequency determination unit 11, and an output unit 13 for outputting the induction sound generated by the induction sound generating unit 12. After induction is started, the frequency determination unit 11 sets the frequency of the induction sound to a fixed value for a predetermined period.
INDUCTION SOUND OUTPUT DEVICE, INDUCTION SOUND OUTPUT METHOD, AND PROGRAM