I worked with cork wall and floor covering in the 80's.
Don't know about sonics, but unless sealed cork smells (for a long, long time while outgassing).
DeKay
Cork room treatments
Has anyone used dimensional cork as room treatment?
Is it effective? Unfortunately I don't have the luxury of a dedicated listening room. My system is in the family room adjacent to an open kitchen. So bass traps and GIK panels everywhere are not an option. I do have a few GIK panels that are wife approaved strategically placed. To improve my room more without making it look like a recording studio we are considering dimensional cork panels. Has anyone tried cork? Any thoughts?