Development of Experimental Set on Resonance of Sound Using Smartphones and Polyvinyl Chloride (PVC) Tube

Abstract

This research paper presents the development of experimental set on resonance of sound using smartphones and polyvinyl chloride (PVC) tube. The 1 metre long and one-closed-end PVC tube which used to be the resonance tube for this experimental set. Two smartphones which were downloaded the Phyphox and the Oscilloscope applications, were used as a sound source and a sound intensity detector, respectively. It was found that the suitable audio frequency from 800 - 2,200 Hz could be used for the accurate sound resonance in this study. Furthermore, the wavelength and speed of sound were studied and calculated in the frequency ranges of 1,000 - 2,200 Hz and 800 Hz with the error compared to the theoretical values within 2 % and 6 %, respectively.