Helmholtz resonator design

A Helmholtz resonator is a device designed to resonate at a specific frequency, similar to how a bottle produces a sound when air is blown across its opening. It consists of a cavity (usually a chamber) and a neck (a narrow opening). When sound waves enter the cavity, they cause the air inside to vibrate. The shape and size of the cavity and neck determine the resonant frequency. Helmholtz resonators are used in acoustics to control sound, reduce noise, or enhance musical tones in spaces like concert halls, cars, or even in audio equipment.