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Engineering Brief

Acoustic Metamaterials in Loudspeaker Systems Design

Authors: Chisari, Letizia; Di Cola, Mario; Martignon, Paolo

AES Convention 147 · Paper 550 · October 2019

Abstract

Materials have been used to control waves propagation ever since, and optics is a prime example. In Loudspeaker Systems applications, there have also been approaches in the attempt of controlling waves by acoustic lenses. Metamaterials are artificial structures, typically periodic, composed of small meta-atoms that, in the bulk, behave like continuous material with unconventional effective properties without the constraints normally imposed by nature. This talk offers the opportunity to share what can be done with acoustic metamaterials in audio industry, especially in Loudspeaker Systems Design. The presentation brings back some approaches from the past that can be revisited using today’s technologies. Moreover, this talk shows some of the already developed technologies that employ these extremely innovative materials.

Details

Published in
AES Convention 147
AES Convention
147
Paper number
550
Publication date
October 6, 2019
Session subject
Transducers
Affiliation
Contralto Audio srl, Casoli, Italy (See document for exact affiliation information.)
Type
Engineering Brief