On the theme of visualizing audio, Audacity has a built-in Spectrogram. https://manual.audacityteam.org/man/audio_track_dropdown_menu.html#spgram https://manua

On the theme of visualizing audio, Audacity has a built-in Spectrogram. https://manual.audacityteam.org/man/audio_track_dropdown_menu.html#spgram https://manual.audacityteam.org/man/audio_track_dropdown_men... https://en.wikipedia.org/wiki/Spectrogram https://en.wikipedia.org/wiki/Spectrogram