On January 7, 2015 at 02:25, ErikU said...
Architextures is a good suggestion. There is often an acoustic engineer that provides a spec, but not always.
If you are just looking for general acoustic room treatment, Acoustimac is a great low-cost option. For best recording, mixing, and listening, a room should have a mix of absorption and diffusion anyway.
+1 Yup.