Fuzhou mighty noise Fuzhou Fuzhou entire vehicle noise insulation

Fuzhou can distinguish the entire vehicle noise insulation "noise" and "acoustic" sound Fuzhou Fuzhou: literally understood, insulation materials refer to hinder the transmission of sound waves to reduce sound wave transmission. The sound absorbing material can absorb refers to reflected sound can be reduced. Insulation material is dense material requirements without pores or slits. Since this type of insulation material dense, difficult to absorb sound waves pass through and make it strong reflection ability, but its poor absorption properties. Such as material requirements of lead, steel and other such sound-absorbing material is porous, loose and breathable, since these porous sound-absorbing material, so its poor sound insulation. Such as: glass wool, rock cotton and other sound-absorbing material such acoustic principle: When the sound wave to the porous surface, causing the pores of the air vibrations, since the viscous friction and air resistance and heat conduction, the considerable part of the sound energy into heat, which in turn has sound-absorbing effect. Car noise include: shock absorption, insulation, sealing, absorbing four links. The main purpose of car noise from construction noise, construction noise for the car is the most effective way to increase the flexibility of the damping damping material that is on the route of transmission, isolation or attenuation spread vibration damping and noise reduction can be achieved . Car noise processing, target and focus acoustic and soundproof addressed different, absorbing the goal is less to solve the weak car noise is repeatedly reflected in the cab, the driver of the reverberant weaken and shorten the reverberation time. The sound insulation was cut off from the noise point of origin (engine, tire noise) spread to the cab. The effect of low-frequency noise deadening barrier to reduce vehicle noise effect is much higher than the use of sound-absorbing material. The best way to cut noise pollution is the right to use all kinds of materials. Vehicle quality of insulation materials mainly depends on the following factors: whether the waterproof, fire, corrosion, is environmentally friendly as well as lightweight, finally understand what the sealing is mainly for body parts. Seal mainly to strengthen the door and the vehicle body frame sealing, effectively reduce the car's high speed wind shear sound, make better airtightness vehicle interior when the door is closed after use the ear can clearly feel a sense of luxury cars. Good seal can reduce overall vehicle noise, especially during high speed wind noise has a good inhibitory effect. Spoiler generated during vehicle caused the root of wind noise - during high-speed driving of a part of the body will be cyclical flow separation, vorticity body pulled from both sides, along the air flow direction, thereby generating noise. Of course, the car stereo, the seal also includes a door seal.