Sound Diffusers 101: Free Designs for DIY Diffuser Panels
DIY Acoustic Diffuser Kits - Check out these "Air Transparent" 1D diffusers, Im thankful I could help make them happen!! A combination absorber/diffuser! I cut + you glue = Affordable diffusion!!! Custom
How to Make a DIY Sound Diffuser (step by step) - Soundproof Expert