An information communication apparatus includes a transmission apparatus transmitting audible sound signals and information signals, and a receiving apparatus. The transmission apparatus has multiple channels through which the audible sound signals are transmitted, one or more signal synthesizing units which electrically synthesize audible sound signals corresponding to each of the channels and machine operation control signals for controlling a machine and which generate synthesized electric signals with regard to each of the channels, and a transmission unit that transmits the synthesized electric signals through a transmission path for each of the channels. The receiving apparatus has one or more receiving units receiving synthesized electric signals through the transmission path for each channel, an extraction apparatus extracting machine operation control signals from the synthesized electric signals for each channel, and a majority logic section making a majority decision based on the extracted machine operation control signals for operation of the machine.