High Frequency Sound Based Device Communication

Abstract: In the chronicle of wireless communication of devices, there have been various attempts at providing a seamless short distance communication technology. All of those technologies are hardware specific. Adding them to consumer devices influences various factors like cost and software compatibility. This paper shows use of ultrasonic sound as data carrier over short range between two modern devices, capable of generating and detecting ultrasound only through their standard speakers and microphones. The results show that such communication is possible over a distance of few metres in a frequency range of 20KHz to 21KHz.

Keywords: Wireless device communication; short range technologies; ultrasound; Goertzel