In the production process, soundproof boxes, soundproof rooms and other soundproof and silent equipment are mainly used in sound-absorbing and sound-proof materials. What is the difference between these two materials?
The difference between sound-absorbing materials and sound insulation materials is that the sound-absorbing materials focus on the magnitude of the reflected sound energy on the side of the sound source, and the goal is to reduce the reflected sound energy. The attenuation absorption of incident sound energy by sound-absorbing materials is generally only a few tenths. Therefore, its sound-absorbing capacity, that is, the sound absorption coefficient, can be expressed in decimals; sound-absorbing materials focus on the size of the transmitted sound energy on the other side of the incident sound source, and the target is transmitted sound Can be smaller. The sound insulation material can attenuate the transmitted sound energy to 10-3～10-4 or less of the incident sound energy. For the convenience of expression, the sound insulation amount is expressed in decibels.
In engineering, the goals and focus of sound absorption treatment and sound insulation treatment are different. The goal of sound absorption treatment is to reduce the repeated reflection of sound in the room, that is, to reduce the reverberation in the room, and shorten the duration of reverberation, that is, reverberation. Time: In the case of continuous noise, this attenuation is manifested as a reduction in the indoor noise level. This is for the same building space as the sound source and the sound-absorbing material. The sound-absorbing material also absorbs the sound from adjacent rooms, which is equivalent to improving the sound insulation of the enclosure structure.
The difference between the two materials in terms of materials is that the sound-absorbing material reflects little incident sound energy, which means that sound energy can easily enter and pass through this material; it is conceivable that the material of this material should be porous, loose and Breathable, this is a typical porous sound-absorbing material. It is usually made of fibrous, granular or foamed materials to form a porous structure in the process; its structural characteristics are: there are a large number of interpenetrating materials in the material , From the surface to the inside of the micropores, that is, it has a certain degree of air permeability. When the sound wave is incident on the surface of the porous material, it causes the air in the micropores to vibrate. Due to the frictional resistance, the viscous resistance of the air and the heat conduction effect, a considerable part of the sound energy is converted into heat energy, which plays a sound absorption effect.
The soundproof boxes and soundproof rooms produced by Jiangsu Kemei Acoustics (Xinke Soundproofing) are made of high-quality sound-absorbing and sound-proof materials. Each equipment we produce is based on in-depth understanding of customer products, and then customized professionally according to the different conditions of customers Program. Therefore, the soundproof box and soundproof room equipment we produced are your best choice.