# Broaden the sound absorption band by using micro-perforated plate back cavities with different cross-sectional areas

> Research article (Physica Scripta, 2023) · cited 23× · AI/ML

**Wikidata**: [openalex:W4382516006](https://www.wikidata.org/wiki/openalex:W4382516006)  
**Source**: https://4ort.xyz/entity/broaden-the-sound-absorption-band-by-using-micro-perforated-plate-back-cavities-with-different-cross-sectional-areas