Supresión de modos de vibración acústicos con un resonador Helmholtz

The insertion of a Helmholtz resonator (HR) in the lateral walls of a tube containing stationary waves in its interior can be used to suppress one or more resonant modes if one chooses the resonator frequency appropriately. The HR can also operates like a filter for traveling waves. In this case, the HR attenuates the waves in a very selective frequency range. In textbooks on Acoustics, only the filtering process of traveling waves is explained. However, it is not simple to carry out experimental arrangement on small length Kundt tubes available in introductory physics laboratories that assure...