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Abstract
We present a theoretical study on how to obtain a Wannier–Stark ladder in the
transmission spectra of an acoustic wave traveling through a waveguide of variable
cross section. Starting from Webster’s equation for the acoustic pressure, we derive
the necessary conditions to obtain the Wannier–Stark ladder. Furthermore, we
present a numerical calculation for the transmission spectra when a Wannier–Stark
ladder is present. This ladder is characterized by a family of well defined peaks,
equidistant in frequency.
Keywords
Stark, acoustic, resonances
Milestones
Received: 18 July 2006
Accepted: 20 April 2007
Published: 1 October 2007