400-604-8982
noise roomnoise room (noise room) is to simulate the free field space indoors, so the sound absorption coefficient of each surface in the room is required to be above 99%. 
no sound roomno sound room
semi-anechoic roomsemi-anechoic room
listening roomlistening room
air sound insulation room
full anechoic chamber (full silence chamber)precision full silence chamber 
sound insulation boxsound insulation box
anechoic chamber(anechoic room )anechoic chamber(anechoic room )
nvh semi-anechoic chambernvh semi-anechoic chamber
acoustic laboratoryacoustic laboratory (soundproof room)