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Anonymous users2024-01-24I don't know how to pretend to be, I just know that the effect is not as good as you think. In the past, the entire door of the laboratory where I worked was double, and the four sides and the top were soundproof panels, and the effect was just like that, only for high-frequency sounds.
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Anonymous users2024-01-23Look at the illustrations. Use 4 kg of sound insulation pads per square to fill 10 cm of glass wool with a density of 60 kg. The cost is not cheap, about 150 yuan per square meter. Search online for Guangzhou Zhengshen .
Because the impact sound is mainly a low-frequency requirement, it is impossible to deal with it without a certain amount of space.
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Anonymous users2024-01-22We filled the ceiling with mineral wool for an erhu teacher, which is soundproof cotton, and the effect was very good.
The sound insulation effect of the soundproof ceiling is relative, and it is impossible to completely isolate the sound after installing the soundproof ceiling. Because there are many ways for sound to come from, it can be transmitted from windows, doors, etc., or it can be transmitted through vibrations.
We installed a ceiling for Mr. Erhu, which was filled with mineral wool and soundproofing cotton, which had a good effect.
Regarding the sound insulation of the ceiling, it needs to be solved according to the height of the floor, because the general upstairs walking sound is low-frequency noise, which has strong penetration, and in direct contact with the floor, the solid sound transmission is very serious, so it is very difficult to do sound insulation, and it is difficult to completely reduce noise. Now the more scientific and reasonable solution is to make elastic soundproof ceilings.
The sound also scores high frequency and low frequency, your kind of construction, high frequency, that is, human voice, sound insulation is definitely good; >>>More
It is recommended to make a gypsum board ceiling, hang 8 cm down on the basis of the original roof, and fill the middle with soundproof cotton, which can effectively insulate sound. It costs about 40 yuan for one square meter of labor, and the material is not expensive! You should be relieved that the guerrillas will do this work, and the workers who begin their apprenticeships will have the ceiling. >>>More