I really did not anticipate acoustics to matter, yet opening patterns, backing products

https://archerdfdv314.wpsuo.com/dormers-that-don-t-trick-the-100-year-performance-of-custom-made-copper-by-salvo-metal-works

I didn't expect acoustics to matter, yet perforation patterns, backing materials, and panel midsts in steel ceilings tame echo while maintaining crisp, modern lines.