Anechoic chambers are generally used to test products with high precision requirements. A test environment with a sound level below 20 decibels cannot meet the test requirements, so an anechoic chamber with high precision is required. The main purpose of the anechoic chamber is to analyze the sound power of the product and test the sound pressure level of the product. So in which industries are anechoic chambers mainly used?

Automotive industry
Anechoic chambers are indispensable in the automotive industry. Anechoic chambers are used for vehicle NVH testing of the whole vehicle and testing of various automotive parts. The NVH anechoic chamber tests the entire vehicle to check whether the vehicle NVH meets the standards. Because automotive parts are the main factor in determining the NVH of the whole vehicle, anechoic chambers are also often used in the automotive industry to test automotive parts, such as engines, powertrains, drive shafts and other accessories. The area of the whole vehicle anechoic chamber is large because sufficient space is needed to achieve the acoustic effect and accommodate the car itself, generally more than 100 square meters; while the anechoic chamber for automotive parts can meet the acoustic testing requirements with more than 10 square meters.

Electromechanical industry
The electromechanical industry is a relatively broad concept, generally including mechanical equipment, electrical equipment, transportation vehicles, electronic products, instruments and meters, various parts, components, etc. Since many products have high requirements for sound power, they will be tested to see if they meet the standards during production, and anechoic chambers will be built to test them, such as common small motors, laptop fans, mobile phone accessories, etc.

Home appliance industry
Anechoic chambers are also widely used in the home appliance industry, such as testing the noise level of products such as air conditioners, fans, hair dryers, and sweeping robots. However, since these products are relatively large and relatively noisy, they are generally not products with particularly high requirements, and silent rooms can also meet the testing needs.

Electroacoustic industry
Anechoic chambers are also widely used in the electroacoustic industry. Since many electroacoustic equipment are relatively small and have high sound power requirements, anechoic chambers are needed to meet the testing needs, such as common microphones, speakers, headphones, microphones, microphones, small speakers, etc. By the way, in order to improve the audition environment or test large audio-visual equipment, musical instruments, etc., a reverberation chamber is used. Different from the anechoic chamber, the reverberation chamber has echoes inside, while the anechoic chamber does not.

According to the above introduction, the anechoic chamber is mainly used for sound power analysis and sound pressure level testing of various products. The above overview is not very comprehensive. In general, any product that needs to be tested for noise can be tested in an anechoic chamber. The anechoic chamber is just a special acoustic room used to test product noise.