Normalized Noise Tests
For these tests, I set the fan to speeds with noise output at the following predefined levels: 20/25/30/35/40/45 dBA. I skip the corresponding tests if the fan under the test cannot reach some noise levels. The speeds shown in the graph below are measured with the fan in a clear space inside my hemi-anechoic chamber without any obstacles. I set these speeds on the Longwin machine, but they slightly change because of the variable conditions that the device applies.
20 dBA Noise Output
- High enough speed
- High enough airflow
- Low static pressure
- Increased power consumption
25 dBA Noise Output
- High enough speed
- High enough airflow
- Low static pressure
- Increased power consumption
30 dBA Noise Output
- High enough speed
- High airflow
- Low static pressure
- Increased power consumption
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