The Difference Between An Anechoic Room And A Soundproof Room

Anechoic rooms and soundproofing rooms are acoustic testing rooms used to test product noise, mainly for testing products such as motors, motors, fans, headphones, microphones, household appliances, automotive parts, musical instruments, or precision instruments. There is no essential difference in the use of anechoic rooms and soundproof rooms. The main difference between the two lies in the accuracy of the acoustic effect. The accuracy of the soundproof room is higher than that of the soundproof room, and the testing effect is better than that of the soundproof room.
Acoustic differences between anechoic rooms and soundproof rooms:
1. The indoor decibel of the anechoic chamber is around 20-6dB, while the static ring anechoic chamber is generally below 15dB. The anechoic room has a free sound field frequency (FO cutoff frequency), while the soundproof room does not have a sound field, and the indoor decibel of the soundproof room is around 45-20 decibels.
2. The anechoic room forms an artificial free sound field by installing sound absorption tips indoors, which not only has sound insulation effect but also has sound absorption effect, thus achieving a basic silent environment. This effect can also be achieved at 0dB. A soundproof room is a flat soundproof panel installed to isolate environmental noise and create a quiet environment indoors.
The difference in testing between an anechoic room and a soundproof room is also determined based on its own acoustic effect. The testing accuracy of the anechoic room is higher than that of the soundproof room. All products that can be measured in the soundproof room can be measured in the soundproof room, but only some products with high accuracy requirements can be measured in the soundproof room. The soundproof room is quiet enough to hear your heartbeat, while the environment of the soundproof room is only equivalent to the indoor quietness after the dead of night. For example, noise testing of motors can generally meet testing needs, and anechoic chambers can also be measured; The requirements for earphone testing are high and can only be measured in an anechoic room, which cannot meet the requirements. In short, anechoic rooms and soundproof rooms are like a hierarchical relationship. The soundproof room is the boss, the soundproof room is the manager, and the boss with authority has it, and some things must be done by the boss.
Differences in production costs between anechoic rooms and soundproof rooms:
The price difference between anechoic rooms and soundproof rooms depends on the production process. Due to the higher acoustic effect of the anechoic room compared to the soundproof room, the production process is also higher than that of the soundproof room. The main difference is that the sound-absorbing wedge is installed in the sound-absorbing room, while the flat sound-absorbing board is installed in the sound-absorbing room. An anechoic room can build a low noise value space, while an acoustic room can build a medium noise value space, so the production cost of an anechoic room is higher than that of an acoustic room.