Acoustic Duct Filter Optimization via Rigorous Analysis
Journal of Theoretical and Computational Acoustics, cilt.34, sa.1, 2026 (SCI-Expanded, Scopus)
- Yayın Türü: Makale / Tam Makale
- Cilt numarası: 34 Sayı: 1
- Basım Tarihi: 2026
- Doi Numarası: 10.1142/s2591728525500148
- Dergi Adı: Journal of Theoretical and Computational Acoustics
- Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
- Anahtar Kelimeler: Duct acoustics, duct filters, filter optimization, wave propagation
- Eskişehir Osmangazi Üniversitesi Adresli: Evet
Özet
This paper presents a computationally efficient approach for the design of acoustic duct filters composed of axisymmetric step discontinuities. A rigorous approach based on the mode-matching technique and the building block method is employed to model sound propagation and compute transmission loss across a cascade of circular duct segments. Unlike existing studies relying on empirical approximations or simulations, the proposed method retains wave-theoretical accuracy while enabling fast evaluations suitable for iterative optimization. In optimization, some global metaheuristic algorithms are coupled with a local search phase to ensure both broad design space exploration and fine-tuned convergence near local optima. The methodology is validated through the design of some filters for frequency bands of practical importance.