Measurement of the Speed of Sound in Air Medium using Lissajous Patterns

International Journal of Electrical and Electronics Engineering
© 2015 by SSRG - IJEEE Journal
Volume 2 Issue 11
Year of Publication : 2015
Authors : P. B. Varvadiya, P. D. Patel, A. McEwan
How to Cite?

P. B. Varvadiya, P. D. Patel, A. McEwan, "Measurement of the Speed of Sound in Air Medium using Lissajous Patterns," SSRG International Journal of Electrical and Electronics Engineering, vol. 2,  no. 11, pp. 5-8 , 2015. Crossref,


Our present work focuses on the beautiful but simple technique for determination of the speed of sound using analysis of the Lissajous patterns obtained on the oscilloscope. The horizontal axis displays the signal input to a loudspeaker while the vertical axis displays the changing signal picked up by a microphone as it is moved to a known distance away from the source. We have taken into consideration the approach of acoustic interferometer in order to predict the Lissajous patterns.


 Speed of Sound, Lissajous Patterns, Acoustic Interferometer.


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