Python code frequency axes

[AcusticoCaustico]

Do anyone know how to change the x axis to display the actual frequencies of an audio file?

I mean, I imported an audio with scipy.io.wavfile, then I did an FFT and plot it, but I realized that the frequencies do not match the frequencies that appear in audio analyzer as Audacity. The truth is that I need to work with audio frequencies (20Hz to 20kHz).

Thanks

 

[GregLocock]

so how did you work out your frequency vector?

Cheers

Greg Locock


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