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, and 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 change slightly due to the variable conditions that the device applies.
20 dBA Noise Output
- Average speed
- Top airflow
- Above-average static pressure
- High enough power consumption
25 dBA Noise Output
- Low to average speed
- High enough airflow
- Average static pressure
- Average power consumption
30 dBA Noise Output
- Average to low speed
- High airflow
- Above-average static pressure
- Mid power consumption
35 dBA Noise Output
- Average speed
- High airflow
- Above-average static pressure
- Increased power consumption
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