A tunable acoustic filter using disordered systems

We propose a tunable acoustic filter using superlattices constructed by random stacking of solid and fluid layers. Acoustic waves are localized in the (RSLs) transmission rates substantially decay to 0 except for resonance transmissions where delocalized. The become unity transmissions. frequencies depend on layer thicknesses, we can modulate spectra from transparent opaque, vice versa, modifying thicknesses. numerically illustrate changes transport properties aluminum/water RSLs, suggest exploit RSLs filters.