0-20db, the environment is very quiet, and the human ear can hardly hear any sound;
20-40db, whispering is loud enough for people to rest and sleep;
40-60db, the sound size of ordinary indoor calls, suitable for daytime life and work;
60-70db, noisy environment, easy to damage nerves in this environment for a long time;
Generally speaking, the noise in residential areas should be less than 50 decibels during the day and less than 45 decibels at night. Exceeding this standard will do harm to the human body.
System doors and windows are the perfect organic combination of performance systems, which will comprehensively consider a series of important properties such as watertightness, airtightness, wind pressure resistance, heat insulation and sound insulation, and also consider profiles, accessories, glass and seals, all of which are indispensable, thus forming a high-performance system doors and windows. After testing, the doors and windows of the system can isolate the outdoor noise to about 30-40db, and the sound insulation effect is good, which can create a quiet and comfortable home environment.