The quality standard for testing an anechoic chamber is mainly considered from the aspects of acoustic effect and structural performance. In general, the main technical indicators of the anechoic chamber include the following items:
Sound absorption performance: Sound absorption performance is one of the key indicators for evaluating an anechoic room. It refers to the ability of the anechoic chamber to absorb sound waves. The sound absorption performance is usually expressed by the sound absorption coefficient, and the value ranges from 0 to 1. The higher the value, the better the sound absorption performance.
Sound insulation performance: Sound insulation performance refers to the ability of the anechoic room to shield external sounds. It represents the degree of attenuation of the sound inside the anechoic chamber when it propagates outward. The sound insulation performance is usually expressed by the sound insulation value or the sound insulation index, and the higher the value, the better the sound insulation performance.
Internal noise level: The noise level inside the anechoic chamber refers to the noise level inside the anechoic chamber under normal operating conditions. An anechoic chamber should be able to effectively reduce the noise level to meet the specific working environment requirements.
Internal air quality: The air quality inside the anechoic chamber refers to the purity and freshness of the air inside the anechoic chamber. The anechoic room should have a good ventilation system to ensure good indoor air quality.
Structural stability: The structural stability of the anechoic chamber means that the structure of the anechoic chamber can withstand the influence of the external environment and maintain a stable working state. The structure of the anechoic chamber should have sufficient strength and stability to prevent deformation or collapse of the structure.
Ease of operation: The ease of operation of the anechoic chamber refers to whether the operation and maintenance of the anechoic chamber are convenient. The anechoic chamber should be reasonably designed and easy to operate to improve work efficiency.
Safety indicators: Consider the structural stability of the anechoic chamber, fire safety and other indicators to ensure its safety during use.

These technical indicators are important indicators for evaluating the performance of the anechoic chamber, and different application scenarios and requirements may have different requirements for these indicators.