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Low-frequency narrow-band acoustic filter with large orifice

  • Guancong Ma*
  • , Min Yang
  • , Zhiyu Yang*
  • , Ping Sheng
  • *Corresponding author for this work

Research output: Contribution to journalJournal articlepeer-review

113 Citations (Scopus)

Abstract

Conventional means of attenuating airborne sound usually require blocking the air medium with a solid material. By exploiting properties of membrane-type acoustic metamaterials (MAMs), we demonstrate large transmission loss to be achievable across a sizable orifice through which air can freely flow. We find that interaction of resonating field of the MAMs with the continuous sound field passing through the orifice is responsible for such phenomenon. The narrow-band characteristic of this effect can be used for acoustic filtering of noise with a particular narrow frequency band.

Original languageEnglish
Article number011903
Number of pages4
JournalApplied Physics Letters
Volume103
Issue number1
DOIs
Publication statusPublished - 1 Jul 2013

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

  1. SDG 9 - Industry, Innovation, and Infrastructure
    SDG 9 Industry, Innovation, and Infrastructure

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