Tunable wideband bandstop acoustic filter based on 2D multi-physical phenomena periodic systems

TL;DR

This paper presents a tunable wideband bandstop acoustic filter based on 2D periodic resonator systems, demonstrating its potential for noise control and sound manipulation through analytical, numerical, and experimental methods.

Contribution

It introduces a novel design of a tunable acoustic filter using 2D periodic resonators, combining theoretical analysis, simulations, and experimental validation.

Findings

Effective noise suppression over a wide frequency band

Tunable resonance properties achieved through design adjustments

Potential for aesthetic and constructive integration in noise barriers

Abstract

The physical properties of a periodic distribution of absorbent resonators is used in this work to design a tunable wideband bandstop acoustic filter. Analytical and numerical simulations as well as experimental validations show that the control of the resonances and the absorption of the scatterers along with their periodic arrangement in air introduces high technological possibilities to control noise. Sound manipulation is perhaps the most obvious application of the structures presented in this work. We apply this methodology to develop a device as an alternative to the conventional acoustic barriers with several properties from the acoustical point of view but also with additional aesthetic and constructive characteristics.