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An innovative Hearing System Utilizing the Human Body as a Transmission Medium

An innovative Hearing System Utilizing the Human Body as a Transmission Medium
국내/국제 국내 국가명 인도네시아
학술대회명 Asia-Pacific Conference on Communications(APCC) 2013 개최연월 2013-08

저자 S. E. Kim, T. W. Kang, J. H. Hwang, S. W. Kang, K. H. Park and S. W. Son
초록
An innovative hearing system utilizing the human body as a sound transmission medium is suggested. By using the human body as a sound transmission medium, sound transmitter and transmission line can be replaced with the human body. Instead of a sound transmitter, the proposed system generates sound in the body. The theory for generating audible sound is based on self-demodulation. When two ultrasonic waves with different frequencies are transmitted through a nonlinear medium, the self-demodulation effect produces an audio signal at the difference frequency of two waves. The self-demodulation effect allows the user to hear the audible sound without a sound transmitter and without making any other noise outside. Moreover, ultrasound can avoid the interference from the noise in the body, reducing the distortions in the propagation process. By substituting a transmission line with the human body, wireless sound transmission is possible. In this paper, a modulation method for the proposed system is suggested and a model of the human body as a transmission medium is analyzed. To estimate the probability of sound generation in the human body, ultrasonic characteristics of a phantom material that approximates the human body is measured. And the novelty of this innovative hearing system utilizing the human body as an intuitive service is discussed.
키워드 parametric array, , body, SSB AM, modeling, sound, ultrasound, self-demodulation, Touch-And-Play (TAP)

과제명 초음파 기반 인체 음향 전송기술
연구기관 한국전자통신연구원 연구책임자 손승원