Shaping reverberating sound fields with an actively tunable metasurface.
basic_science · Level V
Where this comes from
- Record sourced from PubMed, PMID 29891704.
- Also identified by DOI 10.1073/pnas.1801175115 and PMC identifier 6042092.
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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.