Download and install the Audacity VST Enabler.
Drag the "vst-bridge.so" or "vst-bridge.dll" file to the "Plug-Ins" folder in the "Audacity" folder to expand VST plug-in support.
Open the Audacity project containing the audio with unwanted vibrations in the vocal performance. Click the vocal track to select the performance.
Click "Effect" to display the list of native and VST effects. Select the pitch correction VST plug-in from the list.
Set the key and scale of the pitch correction plug-in to correspond with the pitch and scale of the vocal performance. Adjust the "Wet/Dry" or "Amount" knob to adjust the degree to which the pitch correction plug-in affects the audio.
Press the "Play" button on the transport bar to listen to the pitch-corrected audio.