Wake-up device

摘要

A wake-up device includes at least one sound source for use in a wake-up action. A speaker unit converts electric signals from the at least one sound source into sound signals. A signal processor changes the condition of electric signals from the at least one sound source. A random number generator generates a random number. A controller performs sound source selection in accordance with the random number generated by the random number generator, and/or changes the conditions of electric signals from the at least one sound source by means of the signal processor.