Cork acoustical properties

Hi Jason -

Welcome. My guess would be that the cork would have to be extremely thick to be any sort of effective, and I would also expect to see a fairly low absorption coefficient at high frequencies (becoming reflective).

A quick good search reveals a few resources.

www.thermacork.com/acoustic-properties/
www.acoustic.ua/st/web_absorption_data_eng.pdf
cds.cern.ch/record/1251519/files/978-3-540-48830-9_BookBackMatter.pdf

You can see that it doesn't do all that much. It's somewhat better than just bare wall but not immensely. 

There is also some academic research on the subject but it is not free to access. Such is the nature of things.

Hopefully that helps.

Cork looks good on the wall though.

I was thinking of putting cork on the entire front wall see the colored  part of the picture - treating also all the spots with absorption panels and bass traps.

I’m assuming it will not add too much absorption - for a mixing room, correct?