Test the refrigerator sound quality

Description

In refrigerator other than the main criteria to check quality such as cooling rate, power consumption, refrigeration… Today, “motor noise” is also important factor in quality checking, not just for refrigerators but for many other products   

To test the quality of products through noise analysis, most of the major manufacturers in the world have invested in a system called Anechoic Chamber which can be roughly interpreted as a room without echo. This is also the most effective solution to check the noise of the washing machine motor before distribution to the market   

Environmental factors influence refrigerator analysis   

Noise environment : Accuracy is the leading good in all analyzes, all environmental noise parameters can directly affect and ruin the analysis => Need a completely quiet environment no external noise agents   
Echo : Sounds that bounce off a surface called here are sound reflections. Under normal test conditions, engine noise will be emitted and reflected throughout the room resulting in inaccurate measurements.   

What makes Anechoic Chamber the best solution for refrigerator noise test   

To be able to check and analyze the sound of the refrigerator most accurately, in addition to needing a modern noise meter with class 1 accuracy, the test environment is a top priority condition.   

Inside the Anechoic Chamber the background noise is only in the range of 20-25dB, the interior surfaces of the room are covered by special geometric blocks with the main effect to completely eliminate the echo. These two conditions open up an extremely convenient condition for sound measurements   

Several factors check when analyzing a refrigerator sound   

– Motor noise   
– Noise when opening and closing lids   
– Noise when cooling   
– Noise when kept cold   
– Noise coupling