Bookcase diffuser/detractor?

+3.
Anything uneven and with varying reflectivity is much better than bare walls. Add some tchotchkes, too. Everything helps.
B

Where do I clap from? Anywhere and just listen to reflections? If I hear them, then what? I was going to put all my records in the bookcases bc theyre overflowing, which would make it uniform... but your saying to mix and match media for better for diffraction/diffustion? Should I put other objects like pictures, etc in the bookcase?

I vary the spine depth on all the books on my shelves to provide some additional scattering.