Pitch Correction
Definition
The process of adjusting the pitch of a recorded performance to align with the intended musical scale. Can be applied transparently (subtle correction that preserves natural character) or aggressively (the robotic, quantized effect popularized by Auto-Tune). Available as real-time processing or offline graphical editing.
In Simple Terms
Software that fixes or adjusts the tuning of a vocal or instrument after it's been recorded. Used subtly, nobody notices — it just makes the performance sound polished. Used aggressively, it creates the robotic vocal effect heard in modern pop and hip-hop. Almost every commercial vocal you hear has some pitch correction.
In Practice
A lead vocal is processed through graphical pitch correction, gently nudging slightly flat notes toward the correct pitch while preserving the natural vibrato and expression of the performance. An alternate version uses extreme pitch correction for a stylistic robotic effect on the chorus.
Common Confusion
Pitch correction and Auto-Tune are not the same thing. Auto-Tune is one specific product. Melodyne, Waves Tune, and other tools also perform pitch correction. The robotic effect is a creative choice, not an inherent result of using pitch correction.