Tunable sound transmission at an impedance-mismatched fluidic interface assisted by a composite waveguide

Hui Zhang, Zhi Wei, Li Fan, Jianmin Qu, Shu Yi Zhang

Research output: Contribution to journalArticlepeer-review

15 Scopus citations

Abstract

We report a composite waveguide fabricated by attaching a coupling aperture to a waveguide. The acoustic impedance of the composite waveguide can be regulated by merely controlling its coupling vibrations, depending on its structure size. By changing the size to adjust the acoustic impedance of the composite waveguide at an impedance-mismatched fluidic interface, tunable sound transmission at the desired frequencies is achieved. The reported composite waveguide provides a new method for sound regulation at a mismatched fluidic interface and has extensive frequency hopping and frequency agility applications in air-water sound communication.

Original languageEnglish
Article number34688
JournalScientific Reports
Volume6
DOIs
StatePublished - 4 Oct 2016

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