Green Valley staff said they benefited a lot, they will further change their concepts in the future work, combined with the core competitiveness of Green Valley products and the market prospects and put them into practice. Effectively improve the core competitiveness of Green Valley products, constantly integrate demand, create demand for new era and new markets.
1. Acoustics as a multi-field cross-discipline, from its original application to modern times, has been widely used in electronic, ship, construction, environment, automobile, railway, aviation, medical, earthquake and speech interaction. It is developed from a branch of physics. Development has become an important topic that is inseparable from real life.
2. The ultimate goal of acoustic research is to serve human auditory ears, which determines the importance of its location; it is because of the characteristics of human interest, acoustic is not concerned about the rapid development of manufacturing. Until the manufacturing has become a bottleneck, people are considered to be technically and manufactured initiators and end beneficiaries.
3. The simplest understanding of the sound source is that the vibration will generate sound waves, and there are three types of frequencies, high and low due to different waveforms. The frequency band that the human ear can hear is: 20 ~ 20000Hz. But some animals, such as elephants and dolphins, can also hear 20 Hz sounds. Everyone has different restrictions on the frequency bands they listen.
4. Common sound angle score value:
5. Block and absorb sound insulation materials separately. The best material to prevent audio is metal, but it is easy to cause misunderstandings here. In our day-to-day contact, we understand that metal is the most prone to spread the sound. In fact, he is transmitted not sound wave but vibration. Therefore, high density metals are the best sound insulation materials. It reflects sound waves of different frequencies to isolate audio communication and propagation. The material of Green Valley actually absorbs audio. Reduce the vibration angle and reach the function of reducing decibels.
|Common sound scoring value |
|Sound type ||Sound pressure level (decibel) ||Sound type ||Sound pressure level (decibel) |
|Sound of strong explosive explosion ||170 ||truck ||90 |
|Rocket, missile launch site ||150 ||Bustling street ||80 |
|Rifle shooting sound ||130 ||Kitchen in the house ||60 |
|aircraft motor ||120 ||Normal personality ||50 |
|Cutting machine ||110 ||Quiet room ||40 |
|Weaving locomotive ||104 ||Light ||30 |
|Generator work ||100 ||Shaoy sand ||20 |
|Punching ||95 ||Rural quiet night ||10 |
6. Features of the damping coefficient of our material: Damping: Refers to physical phenomena that the vibration system or vibration system is blocked and energy dissipated with time. The meaning of the Internet is more embarrassed, and the simple meaning is: an ingenuity of vibration and audio cancellation. Thereby reducing the vibration frequency and audio ripple. As follows:
7. Rubber is one of the commonly used shock absorbers, which is widely used in automotive industrial and mechanical engineering. The best hard rubber damping coefficient is 1. The harder the rubber, the better performance. The message is below:
8. Domestic on the requirements of sound pressure:
Standard impact sound pressure level (DB): ≤65 between residents.
The weighted standard impact sound pressure level (DB): the floor between the rooms is ≤55. That is, the sound pressure stage generated by the vibration of the original floor itself is combined with the sound absorbing material to achieve the final effect.
Requirements from"civil architectural design" GB50352
9. By using a composite material can better absorb sound, that is, our rubber block matches high density rubber ring. The evaluation rate of vibration and acoustic waves can be effectively reduced. From the perspective of the structure, we can increase material density and increase material thickness in both directions to improve: "Reduce Sound Level ". The former is high.
9. From the perspective of paving, it is impossible to obtain good results with light flooring ground because the vibration will be propagated through the wall. The structure of the bridge is required, which is actually similar to the practice of the skirt board.
10. According to the acoustic principle, the working direction is changing vibration rather than changing the sound.
Green Valley's noise reduction products include:
High strength rubber pad
Foam rubber soundproof pad,
Colorful SBR rubber soundproofing pad,
Centrifugal rubber soundproof pad,
SBR rubber soundproof pad.