After spending three years using Audacity for vocal production (mostly as a hobbyist and occasionally for demo recordings), I have developed a love-hate relationship with its pitch correction capabilities. Here is the long, unflinching review. Audacity comes with two native tools for pitch manipulation: Effect > Pitch and Tempo > Pitch Correction (which uses the MASTER algorithm) and the more surgical Effect > Pitch and Tempo > Sliding Stretch . There is no real-time monitoring, no graphical "blobs" on a piano roll, and definitely no "Chesney" or "T-Pain" presets.
If you set the "Retune Speed" to a very slow setting (e.g., 0.2 seconds) and the "Threshold" low, you can smooth out a shaky vibrato without turning the vocalist into a robot. I recorded a demo of "Hallelujah" where the chorus was drifting sharp. A light pass of the default correction made it listenable—not perfect, but listenable. auto tune audacity
You select "C Major" and hit OK. Audacity moves every note to the nearest C Major note. Sounds great in theory. In practice, a blue note (like a bluesy flat third) or a passing tone gets snapped to a diatonic pitch, destroying the emotional intent of the performance. There is no option to "keep chromatic notes" or adjust sensitivity per note. After spending three years using Audacity for vocal
Save yourself the headache. Keep Audacity for editing and noise reduction. Download a free VST like Graillon or MAutoPitch for actual auto-tune. Your listeners' ears will thank you. There is no real-time monitoring, no graphical "blobs"
Audacity deserves credit for including pitch correction in open-source software. It works mathematically. But in the world of audio production, "mathematically correct" is rarely "musically correct." The artifacts, the lack of real-time feedback, and the destructive editing workflow make it a frustrating tool for anything beyond a one-off fix.