How to make the sound insulation effect of a room very good

if the requirements are not heard at all, it can be regarded as meeting the standards of a studio or studio. The cost will be high. We have to replace it with soundproof doors and windows. The practice room or piano room in general universities can't meet this standard.

I have worked as a studio or studio for several units' internal TV stations. Let me give you a brief introduction. The cost is average. You can't hear the sound near the door, but you don't know if you can hear it near the window. It's usually on the 3-4 floors, but you can't hear it downstairs anyway.

top surface: 2MM thick light steel keel plasterboard sound insulation layer, filled with rock wool or sound insulation cotton, plasterboard back cover, scraped to make latex

glue paint or wall coat (or seaweed mud) economically allowed

floor: spread carpet as thick as possible

wall surface: 2MM thick light steel keel plasterboard sound insulation layer, plasterboard cover, and sewn with mineral wool outside.

doors and windows: replace the door with a 1-thick soundproof door (the lock core is not easy to match, and the delivery is usually ordered). Make a good sealing strip at the door, and add a plastic-steel window with insulating glass inside or outside the window, preferably vacuum if the economy allows.

The simplest and lowest cost, if you do it yourself, go to the labor insurance store and buy a thick quilt (be careful with black heart cotton) to cover the top of the wall completely. Sponge is also ok, but it is not easy to clean and there is too much dust, which is not good for people's health. The back of the door is also covered with a piece that is larger than the door and can cover the crack of the door; Hang a piece above the window like a curtain, hang it when you use it, and go when you don't need it; Common chemical fiber carpet is laid on the ground.

the medium cost is that the mineral wool board covers the wall and top surface; Hang a quilt or cotton curtain behind the door (as above); A carpet with a thicker floor.

the specific price is selected. after all, the regional differences make the cost change greatly. The simplest solution is to ask at the labor insurance store.

Finally, popularize a little knowledge of acoustics: sound-absorbing materials are generally mainly aimed at low-and medium-frequency sounds; Some cavity structures (such as wardrobes and bookcases with open doors) can absorb medium and high frequency sounds.