Abstract: The technology roadmap and design skills for producing Helmholtz carousel are described. The device cleverly transfers sound pressure of the neck into rotary power through the principle of Helmholtz resonator,and can be used to study the relationship between resonance and the intensity of the external sound source frequency,intensity and physical parameters of resonator by demonstrating the rotation speed of the resonator. Experiments show that the device has good teaching effect.

Key words: acoustic resonance, Helmholtz carousel, demonstration experiment