Frequency Plots
25% Fan Speed
50% Fan Speed
75% Fan Speed
100% Fan Speed
From 25% to 50%, the dominant frequency is 315 Hz. At 75% speed, the highest frequency is 800 Hz, and there is a notable also spike at 200 Hz. Lastly, the 250 Hz frequency is the loudest by far at full speed.
Signal Recordings
I have recorded the signals shown above, but please keep in mind that I’ve enabled Automatic Gain Control (AGC) to do so to make it easier for you to reproduce them. The provided recordings are only offered for aural identification purposes.
25% Fan Speed
50% Fan Speed
75% Fan Speed
100% Fan Speed
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