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All Journal JPMS (Jurnal Pendidikan Matematika dan Sains)
Nurpratiwi, Febrianty
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Education Mathematics

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Measurement of Sound Speed Using a Frequency Generator-assisted Resonance Tube for STEM-based Learning Nurpratiwi, Febrianty; Hernani, Hernani; Prima, Eka Cahya; Septiyanto, Arifin
Jurnal Pendidikan Matematika dan Sains Vol. 13 No. 2 (2025): December 2025
Publisher : Faculty of Mathematics and Natural Sciences, Universitas Negeri Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21831/jpms.v13i2.86417

Abstract

This study investigates the measurement of the speed of sound in air using a resonance tube assisted by a smartphone-based frequency generator, designed to support STEM-based learning. The experiment follows a quantitative approach, with the length of the air column as the independent variable and the speed of sound as the dependent variable. Control frequencies of 495 Hz, 755 Hz, 1010 Hz, 1270 Hz, and 1530 Hz were generated via a mobile application. Resonance points were identified by observing the peak sound intensity using a digital sound level meter, which indicated the formation of standing waves. The results showed a strong linear relationship between wavelength (λ) and wave period (T), with regression equations λ = 347.62T + 0.0098 (open pipe) and λ = 361.59T − 0.0176 (closed pipe), each with a correlation coefficient of R = 0.99. At room temperature (24.4°C), the measured speed of sound was (347.6 ± 0.2) m/s for the open pipe and (361.6 ± 0.1) m/s for the closed pipe. These results demonstrate that low-cost, smartphone-assisted setups can produce accurate, reliable data. This method enhances student engagement and understanding of acoustic phenomena, providing an accessible and effective model for implementing hands-on STEM-based learning in physics education.
Co-Authors Eka Cahya Prima HERNANI - Septiyanto, Arifin