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
Airflow is high, and the static pressure is in the middle of the pack. Power consumption is dead low.
25 dBA Noise Output
High enough airflow but not that high static pressure. Power consumption is low.
30 dBA Noise Output
Again, there is high airflow, but the static pressure is low. Power consumption is pretty low.
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