Human body sound transmission apparatus and method for minimizing signal loss

A human body sound transmission method comprising:

• generating an audio signal desired to be transmitted and a carrier wave signal;
• modulating the amplitude of the audio signal by using the carrier wave signal;
• converting the amplitude-modulated audio signal and the carrier signal into ultrasonic wave signals;
• and
• transmitting the audio signal, which has been converted into the ultrasonic wave signal, to the vicinity of the user's ear through the user's body and the carrier wave signal, which has been converted into the ultrasonic wave signal, to the vicinity of the user's ear through the air.