The soundproofing standards for soundproof doors mainly refer to how many decibels of sound the door can block. Based on the previous information, we can summarize the following points:

National standards:
The soundproofing standard index for indoor home doors is usually 22 to 25 decibels (dB), that is, the door should withstand at least 20 decibels of noise.

Soundproofing level:
The soundproofing performance of soundproof doors is usually divided into several levels, such as 30dB, 35dB, 40dB, 45dB, etc. The larger the decibel value, the higher the soundproofing performance.

The soundproofing door represented by the T-shaped door can withstand at least 40 decibels of noise, which is suitable for environments that require higher soundproofing performance.

Special applications:
For example, the soundproofing door of a five-star hotel requires high soundproofing performance, and the soundproofing volume can reach 35 decibels.

Door design and construction:
Sealing: The sealing between the door and the door frame is very important. The use of high-quality sealing strips can greatly enhance the soundproofing effect.
Internal filling: Filling the door leaf with high-density materials, such as wood or special sound insulation materials, can improve sound insulation performance.
T-shaped design: T-shaped door design can provide better sealing, thereby improving sound insulation.
Solid wood door: The sound insulation effect of solid wood doors is generally better than other types of doors, especially solid core solid wood doors, whose sound insulation performance can reach more than 30 decibels.

The sound insulation standard of soundproof room doors usually refers to the number of decibels of noise that the door can isolate. Depending on the application environment, the sound insulation design requirements are also different. For general interior doors, the national recommended standard sound insulation index is 22 to 25 decibels. For environments that require higher sound insulation performance, such as recording studios, music studios, etc., the sound insulation index of soundproof doors may need to reach 40 decibels or more.