Influence of water depth on the sound generated by air-bubble vibration in the water musical instrument

Yoshito Ohuchi; Yoichi Nakazono

doi:10.1117/12.2054011

2 June 2014 Influence of water depth on the sound generated by air-bubble vibration in the water musical instrument

Yoshito Ohuchi, Yoichi Nakazono

Proceedings Volume 9234, International Conference on Experimental Mechanics 2013 and Twelfth Asian Conference on Experimental Mechanics; 92340D (2014) https://doi.org/10.1117/12.2054011
Event: International Conference on Experimental Mechanics 2013 and the Twelfth Asian Conference on Experimental Mechanics, 2013, Bangkok, Thailand

Abstract

We have developed a water musical instrument that generates sound by the falling of water drops within resonance tubes. The instrument can give people who hear it the healing effect inherent in the sound of water. The sound produced by falling water drops arises from air- bubble vibrations. To investigate the impact of water depth on the air-bubble vibrations, we conducted experiments at varying values of water pressure and nozzle shape. We found that air-bubble vibration frequency does not change at a water depth of 50 mm or greater. Between 35 and 40 mm, however, the frequency decreases. At water depths of 30 mm or below, the air-bubble vibration frequency increases. In our tests, we varied the nozzle diameter from 2 to 4 mm. In addition, we discovered that the time taken for air-bubble vibration to start after the water drops start falling is constant at water depths of 40 mm or greater, but slower at depths below 40 mm.

Citation Download Citation

Yoshito Ohuchi and Yoichi Nakazono "Influence of water depth on the sound generated by air-bubble vibration in the water musical instrument", Proc. SPIE 9234, International Conference on Experimental Mechanics 2013 and Twelfth Asian Conference on Experimental Mechanics, 92340D (2 June 2014); https://doi.org/10.1117/12.2054011

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