I really did not anticipate acoustics to matter, yet perforation patterns, backing materials

https://reidjgcr153.image-perth.org/dormers-that-do-not-trick-the-100-year-performance-of-customized-copper-by-salvo-metal-works

I really did not expect acoustics to matter, yet opening patterns, backing materials, and panel midsts in metal ceilings tame reverberation while maintaining crisp, modern-day lines.