Innovative sound transmission system for an intuitive service

• Published in: Electronics letters 2013-11, Vol.49 (23), p.1417-1418
• Main Authors: Kim, S.E, Kang, T.W, Hwang, J.H, Kang, S.W, Park, K.H, Sohn, S.W
• Format: Article
• Language: English
• Subjects: acoustic signal processing; Acoustical engineering; Acoustics; audio signal; Audio signals; Bioacoustics; Exact sciences and technology; Fundamental areas of phenomenology (including applications); human body; innovative sound transmission system; intuitive service; nonlinear characteristics; Physics; propagation process; sound generation; sound transmission medium; transmission line; ultrasonic propagation; ultrasonic waves; wireless sound transmission
• ISSN: 0013-5194; 1350-911X; 1350-911X
• DOI: 10.1049/el.2013.2291

An innovative sound transmission system for an intuitive service utilises the human body as a sound transmission medium. By using the human body as a transmission medium, sound generation in the body and sound transmission through the body can be achieved at the same time. Sound generation in the body is based on the nonlinear characteristics of the human body. Two ultrasonic waves with different frequencies produce an audio signal at the difference frequency of the two waves during the propagation process due to the nonlinearity of the body. By substituting a transmission line with the human body, wireless sound transmission is achieved. This system does not require sound transmitters and the sound transmission line required in the conventional earphones. Users can hear sound without sound transmitters and a transmission line by touching the system without making any other noise outside.