We investigate longitudinal near-field coupling between acoustic resonators grafted along\na waveguide. Experiments are performed in the audible range with a simple acoustic system\ncomposed of a finite aperiodic sequence of air resonators. Transmission typically shows a zero around\na resonance frequency of a single resonator, as is well known. When two identical resonators are\nbrought in close proximity, however, we observe that longitudinal near-field coupling strongly\ninfluences the acoustic transmission. When the separation between resonators is increased so\nthat they can be considered in the far field of one another, we further observe the appearance\nof Fano-like transmission profiles. We explain this observation by the formation of locally resonant\nFabry-Perot interferometers from every pair of resonators. All experimental results are compared to\nthree-dimensional finite element analysis of the acoustic system.
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