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Comparison of Theoretical Methods for Measuring the Speed of Sound in Tubes with Varying Radii

Abstract

The speed of sound in air is typically known for any given temperature and can be verified in a tube with a constant radius by measuring the resonant frequencies which are a harmonic sequence that is linearly related to sound velocity. We can measure those frequencies using a microphone, sound generator, and lock-in amplifier. However, when this relationship is used, the speed of sound found is much lower than the speed measured when sound travels through a tube with varying radii. This indicates to us that our equation needs to be altered to compensate for the varying radii. By testing a variety of tubes of different length and radius we can compare different theoretical methods and determine which method is best.

How to Cite

Moreno, G., (2019) “Comparison of Theoretical Methods for Measuring the Speed of Sound in Tubes with Varying Radii”, Capstone, The UNC Asheville Journal of Undergraduate Scholarship 32(1).

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