DEVICE AND METHOD FOR TRANSMITTING AUDIO SIGNAL BASED ON FREQUENCY MODULATION

摘要

Device (100) and method for transmitting an audio signal using a human body as a communication channel (170). The method comprises modulating an audio signal by using the frequency modulation scheme, applying the modulated audio signal to a human body, and generating a sound by using a nonlinear operation generated by the human body without using a transmission device. The device (100) includes: a first modulation unit (10) that performs frequency modulation on a signal transferred from a sound source, and shifts the phase of the signal; a second modulation unit (20) that delays time of the signal transferred from the sound source, and performs frequency modulation on the corresponding signal; and a ultrasonic converter (160) that receives the signals from the first (10) and second (20) modulation units, converts the received signals into ultrasonic signals, and transmits the converted ultrasonic signals via a human body (170).