Visualizing Sound Directivity via Smartphone Sensors
Physics Teacher Volume 56, Number 2, ISSN 0031-921X
When Yang-Hann Kim received the Rossing Prize in Acoustics Education at the 2015 meeting of the Acoustical Society of America, he stressed the importance of offering visual depictions of sound fields when teaching acoustics. Often visualization methods require specialized equipment such as microphone arrays or scanning apparatus. We present a simple method for visualizing angular dependence in sound fields, made possible via the confluence of sensors available via a new smartphone app that the authors have developed. The versatility of smartphones for use in introductory physics experiments has been demonstrated in several education circles such as in "The Physics Teacher" and elsewhere. The motivation for the new app described here arose while trying to "assemble" a set of experiments suitable for an electro-acoustics course for general education students.
Hawley, S.H. & McClain, R.E. (2018). Visualizing Sound Directivity via Smartphone Sensors. Physics Teacher, 56(2), 72-74.