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

https://www.livebinders.com/b/3716691?tabid=6b5c00e5-96a4-4de6-c9e2-500c93fdcd09

I really did not anticipate acoustics to matter, yet perforation patterns, backing materials, and panel midsts in steel ceilings tame echo while maintaining crisp, modern-day lines.