Exploring Resonance and Sound Transmission in PVC Tubes using Acoustic Sensors Mohamed El Malki, Ilham El-Atmani, Abir Bria, Yassine Bouchafra, Moulay Said Khattab, Jamal Yousfi and Driss Bria E3S Web Conf., 632 (2025) 04002 Published online: 03 June 2025 DOI: 10.1051/e3sconf/202563204002