Hi there,
My University bought a sound isolation booth from you a few years back. It was a single thickness room dimmensions 5x4.1x2.1m, something similar to this:
http://www.studiospares.com/pl_65_65100_ACOUSTICS_ISOLATION%20BOOTHS.htm
Could you give me any technical information that you have about the acoustic properties of this room, specifically the material used on the inside i.e. absorbtion coefficients across frequencies?
If you don't want to post this information on the forum please contact me personally:
j.kornycky@surrey.ac.uk