Test the washing machine sound quality

Description

In the era of increasing technology, when the noise pollution is increasing and affecting human health. The management of sound quality is getting tighter and the sound of a device is becoming a standard for assessing its own quality.

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 washing machine 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 washing machine noise test?

To be able to check and analyze the sound of the washing machine 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 washing machine sound

– Motor noise
– Noise when opening and closing lids
– Sound notification function
– Operating sound of machine
– Noise coupling