Abstract
We demonstrate deterministic control of acoustic transmission using a tunable resonator comprising a maze cylinder and an adjustable slit integrated into a waveguide. This compact metamaterial structure supports Mie resonances that interfere with the continuum waveguide mode, generating a Fano resonance. The transmission spectrum can be continuously reconfigured through two independently adjustable mechanical pathways: changing the slit width and changing the resonator–slit separation. Experimental and numerical results show deterministic control of the asymmetry parameter
q
and quality factor
Q
, enabling direct adjustment of the transmission line shape and resonance bandwidth for applications such as reconfigurable acoustic filters and sensors.