Not exactly an impedance mismatch solution, but a solution nonetheless. A flywheel could work, too, but you’d probably need a fairly big one as well as a clutch to not waste power and achieve ...

Compact broadband acoustic absorber with coherently coupled weak resonances. Science China Press. Journal Science Bulletin Funder Young Elite Scientists Sponsorship by CAST, National Natural ...

This report describes a simple method of measuring the specific acoustic impedance of membrane-type bass absorbers, i.e. of absorbers which consist of a vibrating membrane, the mass of which ...

More information: Ping Zhou et al, Water–air acoustic communication based on broadband impedance matching, Applied Physics Letters (2023). DOI: 10.1063/5.0168562 Journal information: Applied ...