A sound signal generator includes a sound signal output function for outputting a sound signal to a command-driven amplifier that drives a speaker by using the sound signal being converted according to a control command, a first counter control function for changing a content of a first counter in a storage medium in a predetermined manner, a control command sending function for sending a control command to the command-driven amplifier upon having change in the content of the first counter in the predetermined manner, and a second counter control function for changing a content of a second counter in the storage medium in the predetermined manner upon having the control command sent to the command-driven amplifier by the control command sending function.