How much does it cost to decorate a soundproof room?

I don't know exactly where you are. For example, your room is 20 square meters, about 5 meters long, 4 meters wide and 2 meters 8 high, so the wall area is equal to 50.4 square meters, the ground is 20 square meters and the roof is 20 square meters. A door 1.8 m2, a window 2 m2. Decoration of Chengdu wall 1500 sound-absorbing and sound-insulating double effect, vibration-absorbing floor 500, elastic ceiling 800, metal sound-insulating door 300 and full-frequency sound-insulating window 260. The above price includes labor costs, but does not include exterior decoration materials and labor. So the total * * * is about 4000 yuan. The effect can basically meet the requirements of sound insulation. If you add surface decoration, you can make an audio-visual room.