Fan Pure Tone Frequency

Fan Pure Tone Frequency

RN-05
ASPCSPAdvanced

Formula
f = (N × RPM) ÷ 60
When to Use

Predict the fundamental frequency of noise generated by a fan or blower blade passage.

Symbol Legend
SymbolMeaningUnitNote
fPure tone frequencyHz
NNumber of fan blades
RPMRotational speed of fanrevolutions per minute

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