// multi-utility computation suite · offline · instant · precise
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sci.DFT-frequency-resolution Calculator
Calculates DFT frequency resolution Δf = f_s/N and the effective noise bandwidth from window function choice. Rectangular window gives best resolution but highest sidelobes (−13 dB); Hann window improves sidelobes (−32 dB) at cost of 50% wider main lobe.
Inputs
N Samples
Count of items or occurrences.
Fs Hz
Amount per unit of time or per unit quantity. Check the denominator before interpreting.
Window Type
Reference formula or conversion factor shown for context.
Results
frequency resolution Δf (Hz)
Sample size or count used in the calculation.
effective noise bandwidth (Hz)
Random or irrelevant variation in the measurement.
record length T (ms)
The computed linear length.
Nyquist frequency (Hz)
Sample size or count used in the calculation.
window type
The classification or type assigned based on the inputs.