ASMORO, Wiratno A. The Determination of Acoustical Absorbing Materials in The “Al-Marwah” Room of “Al-Akbar” Mosque in Surabaya using Objective Parameters Approximation. IPTEK The Journal for Technology and Science, [S. l.], v. 18, n. 2, p. 63–70, 2025. DOI: 10.12962/j20882033.v18i2.5936. Disponível em: https://journal.its.ac.id/index.php/jts/article/view/5936. Acesso em: 31 jul. 2026.