Head Loss Analysis on Acoustic Propagation on Duct Discontinuities of H-Type Microcells. Romanian Journal of Acoustics and Vibration, [S. l.], v. 22, n. 1, p. 81–90, 2025. Disponível em: https://rjav.sra.ro/index.php/rjav/article/view/415.. Acesso em: 29 apr. 2026.