We report the acoustic analogue of electronic Bloch oscillations and Zener tunneling in sonic crystals. First, an analytic theory of acoustic Bloch oscillations is presented for the simple case of a sound waves propagating along the normal of a multilayer made of any two different solid or fluids materials. The formulation is applied to the case of water cavities surrounded by Plexiglas layers. Transfer matrix calculations confirm the validity of the model by assuming that the longitudinal impinging vibration is perpendicular to the surfaces of the layers. An experimental demonstration of the predictions is performed by using a very simple experimental setup consisting of two transducers and a signal analyzer. While the Bloch oscillations can be used as signal modulator, the Zener effect can be applied as a resonant filter.

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