# A two-step signal denoising method and feature extraction for grain size assessment using ultrasonic waves

> Research article (Mechanical Systems and Signal Processing, 2025) · cited 16× · AI/ML

**Wikidata**: [openalex:W4410322018](https://www.wikidata.org/wiki/openalex:W4410322018)  
**Source**: https://4ort.xyz/entity/a-two-step-signal-denoising-method-and-feature-extraction-for-grain-size-assessment-using-ultrasonic-waves