Perforated Acoustic Board

Perforated acoustic board  Noise can cause a variety of diseases, besides hearing loss, it can also cause other personal damage.

Noise can cause restlessness, tension, rapid heartbeat and increased blood pressure.

Noise can also reduce the secretion of saliva and gastric juice, and reduce gastric acid, thus susceptible to gastric ulcer and duodenal ulcer.

Some industrial noise survey results indicate that the incidence of personal circulatory system is higher in iron and steel workers and in mechanical workshops under high noise conditions than in quiet conditions.

In strong voice, people with high blood pressure are also more.

Many people believe that noise in life in the 20th century is one of the causes of heart disease.

Working in noisy environment for a long time can also cause neurological impairment.

Human experiments under laboratory conditions have proved that human brain waves can change under the influence of noise.

Noise can cause a balance between excitation and inhibition in the cerebral cortex, leading to abnormal reflexes under conditions.

Some patients can cause intractable headache, neurasthenia and brain neurological deficits.

Symptoms are closely related to the intensity of noise exposure.

For example, when the noise is between 80 and 85 decibels, it is easy to get excited and feel tired, and the headache is mostly in the temporal and frontal regions; when the noise is between 95 and 120 decibels, the worker often suffers from blunt headache, accompanied by agitation, sleep disorder, dizziness and memory loss; when the noise is between 140 and 150 decibels, it not only causes ear disease, but also causes fear and general nerves. Systemic tension increased.