1. Noise type
2. Shock absorption and vibration isolation
3. Whole and sealed
1. Rough decoration, first soundproof ceiling and then air conditioning;
2. It has been renovated and renovated for sound insulation, and the air outlet is flush;
3. The sound insulation has been renovated and renovated, and it has been changed to a downward air outlet;
4. The sound insulation has been renovated and renovated, and the air outlet from the wall has been changed to a low level;
5. The sound insulation has been renovated and renovated, and it is installed low under the soundproof ceiling.
1. Noise type
"Talking, TV, outdoor noise" and the like are "air sounds";
"Footsteps, children running and jumping, dragging tables and chairs, heavy objects falling to the ground, elevators, air conditioners, equipment vibrations" are "low-frequency resonance".
2. Shock absorption and vibration isolation
Low-frequency noise, friction or impact on the floor/wall causes the resonance of the ceiling, wall, and floor in the home to produce a sound caused by the difference in air pressure, also known as solid sound transmission, which is low-frequency resonance. (Home noise reduction "earthquake" and "vibration" can be understood as one meaning)
The hazard of resonance will cause the sound insulation material to tremor and fail, and make noise through the surface of the material, resulting in poor sound insulation.
There is contact between rigid materials/solids, which will cause resonance;
Low-frequency noise is transmitted through solids, and there is a sound bridge when there is contact between solids;
Vibration damping is to reduce resonance, and vibration isolation is to separate/isolate/cut off resonance;
Low-frequency resonance must first isolate vibration and then sound insulation. Otherwise, sound insulation white do!
For example, ceiling noise reduction:
Fix it on the floor slab, and then install the sound insulation material, the floor slab and the sound insulation material become a whole, which will resonate together to control low-frequency noise, which is very unprofessional.
, the thickness is close to 20 cm, not to mention the height of the fee, the key is to only reduce a little resonance, the shock absorber and the ceiling are connected, and the solid contact is not broken, and the effect is poor.
It only takes 1 cm to realize that the sound insulation layer has no connection with the ceiling, and there is no contact and no resonance between the solids, completely cutting off the sound bridge, and the real sense of resonance insulation.
, which will propagate through solid materials such as floors, walls, beams and columns, and noise will be emitted from both ceilings and walls. Most of the noise is concentrated in the ceiling, and the ceiling noise reduction is obvious, and the small noise can be isolated; the large noise, the ceiling and the wall will emit noise, and the ceiling and the wall are used together to do vibration and sound insulation.
For example, in the bedroom, the source of the noise is the upstairs living room, about half of the ceiling and half of the wall. It is not ideal to only do the ceiling, and the top and wall cotton are used together to do vibration and sound insulation.
3. Whole and sealed
Sound is like running water, sound insulation is like waterproofing, and the whole and sealing are crucial. Like what:
There is a suspended ceiling all around, only the middle area, completely useless!
The top of the cabinet is not treated, and there is a serious sound leakage!
Wall switch socket is not treated = acoustic hole!
The central air-conditioning area is not treated, and the effect is lowered!
And many more....
Central air conditioning is very popular, sound insulation and central air conditioning are home noise reduction must be solved, a total of 5 practices:
1. Blank decoration, first soundproof ceiling and then air conditioning, perfect compatibility
There are two ways to do this:
(1) The screw rod is worn out from the sound insulation layer, which is used to fix the air conditioner unit, and the metal is not pulled out through the sound insulation layer, there is no hole, no sound leakage, and the metal density is large, which does not affect the sound insulation.
(2) The inner machine is hung on the soundproof ceiling, which is the best way, but the weight increases and the profile specifications need to be upgraded, which will increase the thickness of the ceiling.
2. It has been renovated and renovated for sound insulation, and the air outlet is flush
There is a certain distance between the air conditioner and the ceiling, and the soundproof surface is flush with the upper end of the air outlet. Paving and filling sound insulation materials above the inner machine, and sealing around the machine has little impact on the overall effect and low transformation cost.
3. It has been renovated and renovated for sound insulation, and the air outlet has been renovated
The air conditioner is installed on the ceiling, and the soundproof ceiling covers the inner unit, and a "slot" is made at the air outlet to guide the wind to blow down. Paving and filling sound insulation materials above the inner machine, and sealing around the machine has little impact on the overall effect and low transformation cost.
4. Air is discharged from the wall to ensure the integrity of the soundproof ceiling
The ceiling and all four walls are soundproofed, the height of the air conditioner is lowered, and holes are made from the soundproof walls to make air vents. Ensure the integrity of the soundproof ceiling, and the noise control effect upstairs is better.
5. The air conditioner is installed under the soundproof ceiling, and the effect is full
Disassemble the air conditioner and the surrounding ceiling, and install the air conditioner under the soundproof roof after making the soundproof roof. The operation is the same as that of the blank, "first sound insulation and then air conditioning", and the transformation cost is higher. Ensure the integrity of the soundproof roof and maximize the effect.
Another way, scrap this internal unit, change the wall-mounted air conditioner...
Regarding floor sound insulation and geothermal heating, "sound insulation first, then floor heating".
Quiet home sound insulation - focus on home noise reduction, the use of advanced suspension technology, original imported environmental protection materials, glue-free and pollution-free installation technology... Create high-quality and environmentally friendly sound insulation.
The whole country provides materials and guides the construction throughout the process, and sound insulation belongs to carpentry work, and carpentry masters can operate it.
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