Calculate the vibrations

Is it possible to calculate the frequency of oscillations of a sound with Audacity? For example: a human voice with the so-called “wide vibrato” should average 3-4 oscillations per second. How can it be calculated? Thanks in advance for helping me

Yes on Audacity’s spectrogram-view, (as opposed to the default waveform-view)

Although you may have to increase the frequency-resolution (aka window size) of the spectrogram from the default settings to see sufficient detail … https: //manual.audacityteam.org/man/spectrogram_settings.html