How is the sound absorber installed in the space of the dance hall

Song and dance hall sound insulation decoration project is the main business of Guangzhou Diyin environmental protection technology **** acoustic engineering, Diyin environmental protection has accumulated rich experience in many song and dance hall sound insulation and sound absorption engineering cases, at the same time, the company also produces special song and dance hall sound insulation materials plant fiber spraying, this material is suitable for sound absorption and sound insulation of song and dance halls, with sound absorption and sound insulation, thermal insulation and fire prevention functions; With professional construction technology and excellent sound-absorbing materials, Poly Technology can easily make the sound-absorbing and sound-insulating effect of the sound-absorbing cotton of the dance hall meet your design standards or relevant national standards.

Space Absorber Installation:

1. Positioning: mainly the positioning of the hanging parts, and the positioning of the hanging parts should be accurately measured and determined according to the distance of the chord node of each truss, and then marked by marking;

2. Suspension part welding: According to the position of the marked suspension piece, the suspension part is welded under the sandalwood strip. Pay attention to the neat arrangement and firm welding.

3. Installation: After the suspension parts are installed and welded in place, they are hung with U-rings, and the sound absorbers on the horse road are tied with iron wires, which are required to be arranged regularly, perpendicular to the horizontal plane, and the overall appearance. When the sound absorber is installed, it is necessary to prevent sharp instruments from being punctured, which will affect the sound absorption and aesthetic effect.

The space sound absorbers are hoisted, and the back or side has a self-tapping screw hole for hoisting installation or an aluminum lifting ring Different manufacturers have different installation methods are designed at the factory and will be equipped with corresponding installation accessories, If it is a very high kind of stadium and other large venues need to be hoisted with a large lifting height, it should be specially noted that it is equipped with a sufficiently long special sling wire or lifting ring and other accessories.

Compared with the sound-absorbing materials on the indoor surface, the space absorber has a higher sound-absorbing efficiency under the same projection area. This is due to the fact that the space absorber has a larger effective sound absorption area (including the upper top surface, lower bottom surface and side surface of the space sound absorber); In addition, because the sound wave is reflected between the upper top surface of the sound absorber and the top surface of the building many times, it is absorbed many times, so that the sound absorption volume is increased and the sound absorption efficiency is improved. In general, the improvement of sound absorption efficiency in the middle and high frequency bands is most significant.

The sound absorption performance of space absorbers is often expressed by the effective sound absorption volume of a single sound absorber at different frequencies. The effectiveness of noise absorption (or reduction of reverberation time) in a space absorber depends primarily on the number of space absorbers, the spacing between the suspensions, and the material and structure, as well as the acoustic field conditions within the building space. If the original indoor surface has very little sound absorption, more reflected sound, and a long reverberation time, the noise reduction effect after hanging the space sound absorber is usually 5 8 decibels, and the highest can reach 10 12 decibels; If the sound absorption of the original indoor surface is large and the reverberation process is not obvious, it is not necessary to hang the space sound absorber.

A spatial sound absorber is a sound-absorbing component that is dispersed and suspended in a sound field, usually below the ceiling of a room or hall. It can be made into appropriate geometric shapes and sizes according to the use occasion and sound absorption needs, and generally it is composed of 4 parts: skeleton.

As a support, it can be used with timber bars, angle steel, or thin-walled steel, etc. Protective layer. Commonly used perforation rate greater than 20%, thickness of perforation or seam thin iron sheet, aluminum foil or plastic sheet.

The perforation diameter is 4-8mm. Sound-absorbing fillers. Generally, porous materials such as ultra-fine glass wool felt, mineral wool felt, and asphalt glass wool felt are used, and materials with good air permeability and certain strength such as glass fiber cloth are used as masking layers.

In humid environments, single- or double-layer perforated plates can also be used as sound-absorbing layers (perforation rate is generally less than 5% to increase low-frequency absorption) to replace porous materials. Lifts. Such as metal lifting lugs, hooks, bolts, etc.

When used, each surface is placed in the sound field, which is conducive to giving full play to the sound absorption effect of the material. The effective sound absorption area of a single sound absorber is much larger than the geometric projection area, so if the projection area is calculated, the sound absorption coefficient can be greater than 1. Its characteristics are usually expressed in terms of the amount of effective sound absorption, which not only depends on the nature of the absorber itself, but also increases with the spacing between the absorbers, but is not linearly proportional.

So the best design should be to get as much sound absorption as possible with the least number of sound absorber elements. It is generally believed that when the total area of the plate-shaped sound absorber is equivalent to 30%-40% of the flat roof area of the room, the sound absorption efficiency can reach the best value, and the economic effect is also the best. The space sound absorber is mainly used to reduce the reverberation time and reverberation field sound level in the hall and factory workshop, and has many advantages such as flexible design, simple design, easy use and installation, and beautiful appearance.

However, it should also be noted that it is only effective when the original indoor sound absorption is very small and the reverberation field is strong, and the noise reduction effect is usually not more than 10dB, generally between 3-8dB, and the best will not exceed 15dB.

Space sound absorber is a kind of sound absorption component used to reduce indoor noise or improve indoor sound quality, there is a company specializing in the production of this material in China, called Jiangsu Sanxian Building Acoustic System Company.

1. Make the sound-absorbing materials evenly distributed as much as possible, which is conducive to the uniformity of the sound field.

2. Arrange on the surface with the easiest contact with sound waves and the most reflections.

3. On the back wall of the audience hall and at the railing of the platform, the reflected sound may cause echo interference, so it is often necessary to arrange materials with high sound absorption coefficient on the wall above the skirt of the back wall and the railing of the platform.

4. The scattered arrangement of sound-absorbing materials is more conducive to the diffusion of the sound field and the improvement of sound quality conditions than the centralized arrangement.

5. Generally, the total sound absorption of the two opposite walls of the room should be as close as possible, which is conducive to the diffusion of the sound field.

6. Generally, in the room at the bottom of the ceiling, the narrow aisle adopts the sound absorption treatment method, and the material with a large sound absorption coefficient or the sound absorber in the hanging space is selected, which has a good effect on reducing the interference of noise.

The first step is to smooth the original wall and do a good job of pre-wall treatment.

The second step is to hit the keel, keep a distance of one centimeter between the keel and the wall, and fix it below the soundproof ceiling and above the floating ground respectively.

The third step is to fill the keel void with soundproof cotton (choose bulk density, 35kg m3 or other specifications according to the need), and the sound wave travels in the cotton hole to realize the conversion of sound energy into heat energy, so as to achieve the purpose of reducing sound energy.

Fourth, the keel outer packaging, you can choose gypsum board or poly sound insulation board, if necessary, you can install polyester fiber sound absorbing board on the outside, in order to achieve better sound insulation effect.

Sound-absorbing cotton is a common building soundproofing material with good sound-absorbing properties. It can be made into wall panels, ceilings, and space sound absorbers, which can absorb a large amount of sound energy in the room, thereby reducing noise.

Answer: Now the keel on the wall or ceiling is generally a light steel keel or a wooden keel, and the keel spacing is about 60 cm 2. Cut the glass wool with a small cutter and put it into the keel gap, and the gap needs to be filled 3. When the keel is filled with soundproof cotton, you can lay a decorative board on the wall.

Space two, the installation method of a brand of wall soundproof cotton Clean up the wall and cut the soundproof cotton into the required shape or specification, and then tear off the outer packaging film of the soundproof cotton, and then stick it directly on the wall.

Space three, wall soundproof cotton embedded installation method Clean up the wall, install the wooden keel or light steel keel, cut the soundproof cotton to the desired shape, and then tear off the kraft paper on the outside of the soundproof cotton, and then paste it into the gap of the wooden keel, and finally install the wall decorative board.