The following project was submitted to us by Roy Yaholomi, a graduate of the Holon Insititute of Technology. For his thesis, Yaholomi worked with Or Hetzroni to develop a set of bells that combine their studies of sound with a different kind of ceramic material that incorporates basalt into the mix.
Yaholomi tells us the rocks were ground into a powder, turned into a liquid and poured into plaster molds. The rocks are naturally made out of different kinds of metal and glass. Yahalomi was fascinated with the unique sound and wanted to find a way to make music with it.
In working with the material, the pair tested how different shapes affect the sound. They studied the best ways to make sound move inside the shapes and whether it was possible to determine the pitch each shape could produce.
They produced this series of 20 bells, along with a pair of African Guiros. Accompanying this post are videos of two compositions Yahalomi played on the bells.
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Or Hetzroni and Roy Yahalomi
Samples testing.
Early frequency tests preceding the final product.
Amazing sound and unique instrument design
Nice sound.