Product noise testing is typically conducted in a specific acoustic environment to ensure the accuracy and reliability of the test results. According to the search results, we can understand that product noise testing can be conducted in anechoic or reverberation chambers, rather than in regular laboratories.
 
Anechoic chamber
-Definition: An anechoic chamber is a special type of acoustic laboratory that has good sound absorption effects and can simulate a free sound field environment.
-Characteristic: There is almost no echo in the soundproof room, and the sound will be completely absorbed after it is emitted.
-Purpose: Suitable for testing products with high sound level requirements, such as electroacoustic components (microphones, speakers), precision instruments, etc. It can measure the sound absorption coefficient of sound-absorbing materials and structures, as well as the noise level, power level, frequency response characteristics of measuring equipment and products.
 
Reverberation room
-Definition: A reverberation chamber is an experimental room with a diffuse sound field that can simulate the acoustic conditions in actual usage environments.
-Characteristics: There is a significant echo effect in the reverberation room, where sound is emitted and reflected, forming a uniformly distributed sound energy.
-Purpose: Suitable for sound effect testing of electroacoustic and audio systems, mainly used in studios, audiovisual rooms, cinemas, high-end conference rooms and other places. It is possible to test the sound absorption coefficient and sound source power of materials or structures, and evaluate whether the sound production requirements of speakers and instruments meet the standards.
 
laboratory
-Definition: A laboratory refers to a place for scientific research and technological development, but does not specifically refer to an acoustic testing environment.
-Characteristics: The acoustic environment in laboratories is usually not as strictly controlled as in anechoic and reverberation rooms, and may be affected by external noise.
-Purpose: The laboratory can be used for various types of testing, but it is not specifically designed for noise testing.
 
Conclusion
Based on the above information, product noise testing is usually conducted in anechoic or reverberation rooms, rather than in regular laboratories. The choice of acoustic environment depends on the specific requirements of the test and the characteristics of the product. If it is necessary to test the noise level and frequency response characteristics of the product, an anechoic chamber is usually chosen; If it is necessary to test the sound effects and acoustic performance of a product, a reverberation chamber is usually chosen.