How to soundproof a room?

1. Roughen the walls when decorating: smooth walls are prone to echo and increase noise. Use decorative materials with good sound absorption effect, such as wallpaper, or sound insulation materials, such as mineral wool sound-absorbing board, which can be used for walls and ceilings.

2, the use of fabric to eliminate: hanging and tiled fabrics, their sound absorption effect and effect are the same, such as curtains, carpets and so on. Curtains have the most obvious sound insulation effect. Carpets can eliminate footsteps. Thick curtains in the bedroom can control light and external noise.

3. Choose soft floors: the fibers of wooden furniture are porous and can absorb noise. It is also a good choice to use cork floor in decoration.

4. Thicken the wall: the street side should be soundproof, and the window on the street side should be converted into a soundproof window. For example, double-layer windows can effectively sound insulation. The insulating glass is selected, and the sound insulation effect is also good.

Extended data:

Basic principle of sound insulation

For a building space, if its enclosure structure vibrates under the action of external sound field or is directly impacted by objects, it will radiate acoustic energy to the building space, so the sound outside the space will be transmitted to the building space through the enclosure structure, which is called "sound transmission".

The incoming sound energy is always less than the external sound or impact energy, so the enclosure structure isolates a part of the sound energy acting on it, which is called "sound insulation". Sound transmission and sound insulation are just a phenomenon, and a pair of complementary concepts are obtained from two different angles.

If the enclosure structure isolates the sound energy of the sound field in the external space, it is called "air sound insulation"; If the acoustic energy radiated by the impact energy to the building space decreases, it is called "solid sound or impact sound isolation".

This is different from the concept of vibration isolation. The former is the air sound that finally reaches the receiver, and the latter is the solid vibration that the receiver feels. However, taking vibration isolation measures to reduce the impact of vibration or impact sources on closed structures (such as floors) can reduce the impact sound itself.

References:

Baidu encyclopedia-sound insulation