【 Weak current College 】 lower room noise-Power By 【 China power house network 】

To hear the pure quality sound, one of the conditions is a no interference noise in the environment, reduce the noise of the audiovisual room. The present audio-visual room noise reduction, in addition to laying out acoustic sound-absorbing materials, you can take the sound and vibration isolation measures. The acoustic and sound insulation. Generally speaking, the noise was mainly external noise, extraneous noise include urban noise (traffic and voice), additional rooms inside the building, as well as the noise of air conditioning system-generated noise, etc.
In order to reduce the noise, the room should be chosen in a quiet environment, but also try to minimize interference between the various rooms. Noise-interior there are two main ways. One is the sound transmission through the walls of the incident wave into the room, then by air medium to this room's noise, as well as through a door, window-gap, air conditioning, air holes incoming pipeline of noise, vibration and noise, and labs, and building on the solid connections in other buildings, impact and vibration, and along the solid connection operations are propagated to the Interior of the noise. Sound insulation measures have to be targeted, on sound transmission path for isolated projects often referred to as the "sound" projects, "vibration sound" isolated projects, also often referred to as the "isolation" project, people are often collectively referred to as sound insulation. Usually the heavier sound insulation materials (density), the thicker the better design for double doors, double wall, and other effects are rather good, often using specific acoustic measures include the following:

1, wall: a wall should be thick, heavy structures to enhance the capacity of the air noise isolation. If there are conditions, by setting up double walls. Set in the inside walls of absorbing, and some distance from the wall, in essence, is the nature of the double-wall.

2, ceiling and floor carpet: If the room is located in the middle of the high-rise buildings, upstairs, downstairs noise through the ceiling and floor-room. In order to reduce these channels incoming sound indoor vibration, you can set a ceiling to isolate the noise coming from the sky, you can lay the floor, to isolate the noise coming from the ground.

3, window and door joints, pipe: in the door, window seam sealing paste, which is the most simple sound-processing methods.

4, doors and Windows: set acoustic doors and Windows is the key to reducing noise. Transmission loss of door depends on its weight, hardness and density. General sound transmission loss of door to 14-18dB, increased weight, thickness of the door, you can improve the sound transmission loss. If you set the Middle double doors, sound-absorbing materials that may be filled with a noticeable increase in the sound-absorbing effect. If conditions allow, room window can be set to two, even three layers, the more thick glass window, glass, glass and frame with a profiled rubber connection so that the sealing and flexible balanced, high-quality window of sound insulation can reach 24cm brick wall.