Wireless microphone system using the multi tone signal

A wireless microphone system using a multi-tone signal is provided to use a plurality of channels by solving the inference generated when the channels are used in a narrow space. A wireless microphone system using a multi-tone signal includes a transmission unit(100), and a receiving unit. The transmission unit has an audio input unit(110), a first MCU(Main Control Unit)(120), an audio signal mixing unit(130), and a modulation unit(140). The audio input unit receives an audio signal from a microphone. The first MCU generates at least one tone signal in proportion to the number of channels, and then stores a channel list generated by a channel forming program which arranges the generated tone signal so as to be adapted for each channel. The first MCU extracts a tone signal corresponding to a specific channel in the stored channel list, and extracts the channel information adapted for the extracted tone signal. The audio signal mixing unit mixes the extracted tone signal with the audio signal. The modulation unit modulates the mixed signal on the extracted channel information.