What are the usual methods people use on the road to reduce noise?

The impact and harm of noise on people are directly related to the intensity of noise. In buildings, the measures taken to reduce noise are mainly sound insulation and sound absorption. Sound insulation is the isolation of sound sources to prevent noise from being transmitted indoors.

Planting trees on both sides of the road can insulate the houses on both sides. In the building, the sandwich structure made by separating the multi-layer dense material with porous material will also have a good sound insulation effect. In order to eliminate noise, the commonly used sound-absorbing materials are mainly porous sound-absorbing materials, such as glass wool, mineral wool, expanded perlite, perforated sound-absorbing panels, etc.

The sound absorption performance of a material is determined by its roughness, flexibility, porosity and other factors. In addition, the lawn and trees around the building are also good sound-absorbing materials, so we plant flowers and trees, which not only beautifies the environment in which we live and learn, but also prevents noise pollution to the environment.

China's psychology community believes that in addition to considering human factors, it is also necessary to take into account economic and technical feasibility in controlling the noise environment. Adequate noise control must consider the entire system composed of the noise source, the sound transmission pathway, and the recipient. Measures to control noise can be aimed at any of the three or any of the above.

Noise control includes:

1) To reduce the noise of the sound source, the industry and transportation industry can choose low-noise production equipment and improve the production process, or change the movement mode of the noise source (such as damping, vibration isolation and other measures to reduce the vibration of the solid sound emitter).

2) Reduce noise in the sound transmission pathway, control the propagation of noise, change the noise propagation path that has been emitted by the sound source, such as the use of sound absorption, sound insulation, sound barrier, vibration isolation and other measures, as well as reasonable planning of urban and building layout.

3) When measures cannot be taken on the sound source and transmission path, or the acoustic measures taken still cannot achieve the expected effect, it is necessary to take protective measures for the sound recipient or the sound receptor organ, such as workers who are exposed to long-term occupational noise can wear earplugs, earmuffs or helmets and other ear protectors.

Although noise control is now technically mature, due to the large scale of modern industry and transportation, there are many enterprises and places that need to adopt noise control, so it is necessary to make a comprehensive trade-off from the technical, economic and effective aspects of noise prevention. Of course, specific issues should be analysed on a case-by-case basis. In the control room, design room, workshop or place where employees work for a long time, the intensity of noise should be low; The warehouse or few people go to the workshop or open space, and it is okay to be a little louder.

In short, there should be a certain difference in the treatment of noise at different times, different places, different properties and different durations.

Some ways to prevent noise pollution].

1.Create a soundproof forest.

2.Move businesses with high levels of noise pollution out of urban areas.

3.Prevention at the source, reduction of the transmission process.

More specifically, there are encyclopedias.

There are three main types of noise: mechanical noise, aerodynamic noise and electromagnetic noise. The general methods of noise control are:

1) Reduce noise from the sound source. Improve the equipment structure, change the operation process, improve the processing accuracy and assembly quality.

2) Reduce noise in the noise propagation pathway. When the factory layout is laid out, the noise source is concentrated away from people or natural barriers (greening trees, buildings, etc.) are built to achieve the purpose of reducing noise.

3) Use sound insulation equipment and soundproof appliances to protect the noise at the noise receiving place to isolate strong noise.

4) Adopt porous sound-absorbing materials, design resonance sound-absorbing structures and other methods to absorb sound, reduce noise or reduce sound at the place where the noise occurs.

In order to reduce noise, people usually use the following methods on the road:

1. Green belts are planted on both sides, which can absorb considerable noise; A green divider is set up in the middle of the highway, which can improve the microclimate and improve the cleanliness of the highway while absorbing sound.

2. Build high-grade pavement, such as very fine asphalt concrete pavement, cement concrete pavement, etc., to reduce the sound of wheel friction.

3. Install wave-type highway railings to cancel each other out the sound waves to achieve the purpose of noise reduction.

4. In addition to earbuds, you can also use other methods to deal with your ears, which is one of the methods.

5. Silencer device, such as people wearing thick clothes can be silenced themselves.

1 External: green belts, soundproof walls, etc., 2 Root causes: Noise reduction, regulation of industrial noise time, traffic regulations, etc., 3 Self: Strengthen protective measures.

In order to reduce noise pollution, many measures have been adopted:

1.Improve equipment and processes to eliminate noise sources by using noise-free or low-noise equipment and processes wherever possible;

2.Isolate some of the unavoidable noise from living quarters, such as airports built on the outskirts of the city;

3.In the construction of the project, sound absorption and sound insulation equipment are widely used to reduce noise;

4.Afforestation can also reduce noise in cities and industrial and mining enterprises.

In order to reduce noise, people usually use the following methods:

1.Control the sound source (muffler installed).

2.Control of propagation routes (sound insulation, green belts).

3.Atenuation from the human ear (earplugs, earmuffs).