There are many fields in science and technology that require an acoustically treated testing room. Testing new equipment before production and many other types of scientific experiments.require a quiet room, for good test results. First the space needs to be isolated from outside noise using sound barrier materials such as mass loaded vinyl and Green Glue damping compound in the wall, floor and ceiling assemblies.
Soundproof rooms require a sound rated acoustic door or acoustic door seals on an existing door, to block sound leakage around the door. The inside of the room will require sound absorbing wall panels or acoustic foam to reduce room reverberation so microphones pick up sound from the object being tested rather than sound from reflective surfaces.