# A tunable metamaterial muffler with a membrane structure based on Helmholtz cavities

> Research article (Applied Acoustics, 2019) · cited 45× · AI/ML

**Wikidata**: [openalex:W2972365687](https://www.wikidata.org/wiki/openalex:W2972365687)  
**Source**: https://4ort.xyz/entity/a-tunable-metamaterial-muffler-with-a-membrane-structure-based-on-helmholtz-cavities