Fiber Optic Box,Fiber Optics Box,Fiber Optic Boxes,Fiber Optic Junction Box Cixi Dani Plastic Products Co.,Ltd , https://www.danifiberoptic.com Sound insulation is a method of reducing noise in the path of sound wave propagation. Its effect is more obvious than sound absorption and noise reduction, so sound insulation is an effective measure to obtain a quiet building acoustic environment.
According to the way of sound wave propagation, we can divide the sound insulation into two categories, one is air sound insulation, and the other is impact sound insulation, also known as solid sound insulation. The noise propagating through the air is generally referred to as air sound, such as aircraft noise, car horn sound, and people singing and talking. The use of walls, doors, windows, or barriers to isolate sounds that travel in the air is called airborne sound insulation. As a result, a wide variety of sound insulation products such as sound insulation walls, sound insulation windows, sound insulation doors and sound insulation barriers have been produced. Noise caused by the structure generated and propagated in the mechanical vibration, such as the footsteps on the floor, the drag of the tables and chairs, the jumping of the children and the collision sound when the doors and windows are opened and closed, etc., become the impact sound, also known as Structure sound or solid sound. The use of elastic damping materials for vibration isolation or vibration damping to isolate the impact noise propagating in the structure is called percussion sound insulation. The common percussion sound insulation method is the floating floor structure, also called the floating ground station, and the corresponding product is the vibration insulation sound insulation pad.
The biggest difference between sound insulation materials and sound absorbing materials is that sound insulation materials are often dense and hard materials, which have strong reflection on the sound waves incident on them, so that the transmitted sound waves are greatly reduced, thereby providing sound insulation; The surface of the acoustic material is generally porous and has a strong absorption and transmission for incident sound waves, and greatly reduces the reflected sound waves.
Compared with sound absorption and noise reduction, sound insulation and noise reduction can directly isolate the noise source from the affected receiving point, that is, confine the noise to a small space without passing it out. Therefore, in actual engineering, it is often required to use sound insulation and noise reduction in parallel with sound absorption and noise reduction, so that the noise inside the space can be reduced, and the noise can not be propagated outward.