Shaping reverberating sound fields with an actively tunable metasurface

Guancong MA*, Xiying Fan, Ping Sheng, Mathias Fink

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

49 Citations (Scopus)

Abstract

A reverberating environment is a common complex medium for airborne sound, with familiar examples such as music halls and lecture theaters. The complexity of reverberating sound fields has hindered their meaningful control. Here, by combining acoustic metasurface and adaptive wavefield shaping, we demonstrate the versatile control of reverberating sound fields in a room. This is achieved through the design and the realization of a binary phase-modulating spatial sound modulator that is based on an actively reconfigurable acoustic metasurface. We demonstrate useful functionalities including the creation of quiet zones and hotspots in a typical reverberating environment.

Original languageEnglish
Pages (from-to)6638-6643
Number of pages6
JournalProceedings of the National Academy of Sciences of the United States of America
Volume115
Issue number26
DOIs
Publication statusPublished - 26 Jun 2018

Scopus Subject Areas

  • General

User-Defined Keywords

  • Acoustics
  • Metasurface
  • Reverberation
  • Wavefront shaping

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