1. Wall sound insulation First, make a layer of keel on the wall, leaving a cavity ≥ 50mm in the middle, and then fill the cavity with sound-absorbing cotton (the sound-absorbing cotton mentioned here is not rock wool or glass wool, everyone knows the above two This kind of sound-absorbing cotton is harmful to the body) The sound-absorbing cotton should choose environmentally friendly sound-absorbing cotton made of polyester fiber. Then use double-layer gypsum boards as a layer of lightweight wallboard outside the keel, and place the sound insulation and damping material between the two layers of gypsum boards (note: all butt joints of gypsum boards must be sealed with putty or sealant).

  2. Ceiling sound insulation The construction method of the ceiling sound insulation is the same as that of the wall. If the ceiling part has suspended audio equipment, it is necessary to install a shock absorber at the connection between the boom and the floor to prevent the low-frequency vibration sound of the audio from spreading upstairs through the boom. .

3. Ground sound insulation (you can do it according to your own situation) For ground sound insulation, choose to lay sound-proof and shock-absorbing pads on the ground. If you spend too much money on decoration, you can also lay carpets directly on the ground.

   

Since the sound requirements for watching movies or singing karaoke will be relatively high, and the wall part needs to be sound-absorbed, at this time someone may ask, isn’t it already sound-proofed? Here I want to talk about the difference between sound insulation and sound absorption. Sound insulation is to isolate, cut off or separate the transmission of sound. The sound absorption is to convert part of the sound energy introduced into the surface of the material into heat energy and lose it, reducing the reflection of the sound, thereby improving the clarity of the sound. Therefore, in order to achieve the best appreciation effect, sound-absorbing treatment is also a crucial link. The surface-absorbing sound-absorbing materials are now commonly used polyester fiber sound-absorbing panels, pure solid wood sound-absorbing panels, diffusion panels and other materials. This material has a good sound-absorbing effect. The color is good-looking, environmentally friendly, and the construction is simple.