How to view the periodogram or FFT of a WAV file in Audacity?

Question

I’m trying to visualize the periodogram (or the Fourier transform (FFT)) of a WAV file (not a spectrogram produced by a sliding window). Is it possible to do this using Audacity?

Answer 1

Have not used this myself, but found this information on the official Audacity site on “Plot Spectrum” (under “Analyze > Plot Spectrum”) and it seems to cover what you are talking about.

Plot Spectrum takes the selected audio (which is a set of sound pressure values at points in time) and converts it to a graph of frequencies (the horizontal scale in Hz) against amplitudes (the vertical scale in dB).