# Noise attenuation and performance study of a small-sized contra-rotating fan with microperforated casing treatments

> Research article (Mechanical Systems and Signal Processing, 2020) · cited 29× · AI/ML

**Wikidata**: [openalex:W3039978587](https://www.wikidata.org/wiki/openalex:W3039978587)  
**Source**: https://4ort.xyz/entity/noise-attenuation-and-performance-study-of-a-small-sized-contra-rotating-fan-with-microperforated-casing-treatments