advice wanted!!

I am currently working on a Project. I would be grateful if anyone can explain the following: Control room 13' x 22' - 3" thick solid wood door with acoustic lock and threshold plate Explain what is the acoustic lock and threshold plate? Are these ready made product I can get on market? Any information you can pass me? - sound lock corridor for 3" solid wood doors between the control room and studio Recording Studio 15' x 22' - Design entire room and must be 'Fully Floating' completely isolated from the structure Can you explain this? - also, is professional sound lock same as acoustic lock