absorbers

We may soon have sonic wallpaper with microscopic scales that help absorb sound. Now, how effective it will be will need to be seen.

I'm planning to build some bass traps. The rear wall will be treated with about 40cm of glass wool but I want something more attractive for the front wall. I really like the looks of triangular bass traps; they're not as visually intrusive as square bass traps to me. I do all my caculation...