Now most people buy new houses after marriage. They are more ready to have a child!

With the development of technology and step consumption, more and more people are not so exclusive to the top-level compound building. However, with the warm reminder to the parents of the top-level building, with the popularization of step consumption, the elevator noise complaints of high-rise buildings are also rising year by year, and the elevator noise belongs to low-frequency noise. Pregnant women and babies have been in low-frequency noise environment for a long time It's really bad.

When the low-frequency sound propagates in the air, the vibration of air molecules is small, the friction is slow, and the energy consumption is small, so the transmission is far away and the permeability is strong.

Usually in the outdoor or open window, the low-frequency noise outside the house is covered by other medium and high-frequency noise without feeling, but after the door and window are closed indoors, the medium and high-frequency noise will be soundproofed by the door and window, and the penetration of low-frequency noise will appear.

Usually at night when people are quiet or relatively quiet, the high-frequency noise is greatly reduced, and the low-frequency noise becomes the "leading role" of sound pollution.

Why is low frequency noise harmful to baby?

The baby hears the external sound through the pregnant mother's abdominal wall. In this process, the reflection of the abdominal wall can reduce the external sound by about 20 decibels. The baby hears a sound that is not as loud as the one we hear directly. However, for the low-frequency noise, there is almost no weakening function, which means that the baby's hearing system is directly in contact with the strong noise.

Scientists have pointed out that the cochlea, which forms part of the inner ear of the fetus, began to grow and develop from the 20th week of pregnancy, and its maturation process continues more than 30 days after the birth of the baby. Because the inner ear cochlea of the fetus is in the growing stage, it is very vulnerable to low frequency noise damage. Low frequency sound in the external environment can be introduced into the uterus and affect the fetus. The inner ear of fetus is stimulated by noise, which can damage some areas of brain and seriously affect the development of intelligence.

The influence of noise on fetus also depends on time and noise.

If the noise is more than 80 dB, it will have a great impact on the fetus. The noise may have an impact on the hearing of the fetus. If it is serious, it may cause fetal deformity, so keep away from the noise environment.

03 low frequency noise may cause headache, insomnia and other neurosis

The direct effect of low-frequency noise on physiology is not as obvious as that of high-frequency noise, but recently experts engaged in low-frequency noise research in China pointed out that low-frequency noise can cause headache, insomnia and other neurosis.

At present, the domestic acoustic environment quality standards and monitoring methods are mainly for high-frequency noise detection. Low-frequency noise is not high because of the decibel, so people often complain after suffering from low-frequency noise.

Shenzhen Japan elevator noise control research center was established in 2006. It is one of the earliest scholars engaged in the research of elevator noise reduction technology, and the famous domestic elevator noise reduction expert "Mr. elevator" is personally in charge of the technology.

The center is mainly based on the technology of Guangdong special equipment testing institute and Tsinghua University building physics laboratory, focusing on "the problem of elevator noise control in modern high-rise buildings", specializing in elevator noise control technology research and product development, and is the first enterprise research center in China "taking elevator noise and vibration control as technical subject".

Shenzhen and Japan elevator noise reduction products do not affect the structure and decoration of the owner's home, do not change the wall design and structure of the elevator machine room. The technical products are applicable to all elevator brands, and are committed to a more perfect residential quiet environment. We hope our professional elevator noise reduction team can make your elevator more environmentally friendly, and make your baby and home better! Cut off the elevator noise and discover the beautiful world! Now most people buy new houses after marriage. They are more ready to have a child!

With the development of technology and step consumption, more and more people are not so exclusive to the top-level compound building. However, with the warm reminder to the parents of the top-level building, with the popularization of step consumption, the elevator noise complaints of high-rise buildings are also rising year by year, and the elevator noise belongs to low-frequency noise. Pregnant women and babies have been in low-frequency noise environment for a long time It's really bad.

When the low-frequency sound propagates in the air, the vibration of air molecules is small, the friction is slow, and the energy consumption is small, so the transmission is far away and the permeability is strong.

Usually in the outdoor or open window, the low-frequency noise outside the house is covered by other medium and high-frequency noise without feeling, but after the door and window are closed indoors, the medium and high-frequency noise will be soundproofed by the door and window, and the penetration of low-frequency noise will appear.

Usually at night when people are quiet or relatively quiet, the high-frequency noise is greatly reduced, and the low-frequency noise becomes the "leading role" of sound pollution.

Shenzhen Japan elevator noise control research center was established in 2006. It is one of the earliest scholars engaged in the research of elevator noise reduction technology, and the famous domestic elevator noise reduction expert "Mr. elevator" is personally in charge of the technology.

The center is mainly based on the technology of Guangdong special equipment testing institute and Tsinghua University building physics laboratory, focusing on "the problem of elevator noise control in modern high-rise buildings", specializing in elevator noise control technology research and product development, and is the first enterprise research center in China "taking elevator noise and vibration control as technical subject".

Shenzhen and Japan elevator noise reduction products do not affect the structure and decoration of the owner's home, do not change the wall design and structure of the elevator machine room. The technical products are applicable to all elevator brands, and are committed to a more perfect residential quiet environment. We hope our professional elevator noise reduction team can make your elevator more environmentally friendly, and make your baby and home better! Cut off the elevator noise and discover the beautiful world!