What is the sound insulation effect of building glass?
What are the differences in performance between building glass and traditional sound insulation glass? Can building glass be 100% soundproof?
2 features of noise
There are many kinds of noise, and urban noise is closely related to human beings, which seriously affects people's quality of life. Urban noise is mainly divided into living noise, traffic noise, equipment noise and construction noise. Among them, traffic noise has the greatest impact on life due to its continuous nature. Our doors, Windows and walls can reduce the impact of these noises. In architectural acoustics, 200-300hz or below is generally called low-frequency sound, 500-1000hz sound is called medium-frequency sound, and 2000-4000hz or above is called high-frequency sound . The most sensitive frequencies in the human ear are 100-3150 hz. The noise of daily life is found in all frequency bands. The traffic noise mainly focuses on the low and middle frequencies, including the sound of automobile engine and the sound of tyre friction road.
In the building, the window is leakage point, and glass took up the majority of the window area, so the low-frequency sound insulation performance of window glass can determine the comfort of the whole building. Ordinary sound insulation glass can only improve the sound insulation performance of glass at medium and high frequencies by increasing surface density and changing to asymmetric structure. Can building glass afford to improve the low frequency sound insulation performance of Windows?
3. Architectural glass structure features
The building glass is composed of two pieces of glass sealed with brazing solder all around, with a space of 0.15mm thick separated by supporting material in the middle. This space reaches the vacuum degree of less than 10-2pa through vacuum extraction, forming a vacuum layer.