pitchcorrecting

Pitch correcting is a process used in audio production to adjust the pitch of a recorded sound, most commonly a vocal performance. This technique is often employed to fix slight inaccuracies in a singer's intonation, ensuring that notes are sung precisely on key. While the primary goal is often corrective, pitch correction can also be used creatively to achieve unnatural vocal effects.

The technology behind pitch correction analyzes the frequency of the incoming audio signal and compares it to a target pitch, typically determined by the musical key of the song. If a deviation is detected, the algorithm subtly shifts the pitch of the audio to match the desired target. Various algorithms exist, offering different degrees of control and sonic artifacts. Some algorithms are designed for transparent, subtle adjustments, aiming to be inaudible. Others can be pushed to create a distinct robotic or synthesized vocal sound, a popular effect in certain genres of music.

Early forms of pitch correction were manual and labor-intensive. However, advancements in digital signal processing have led to the development of sophisticated software plugins and hardware units that can perform these corrections automatically and in real-time. The use of pitch correction has become widespread in modern music production across many genres, from pop and rock to electronic and hip-hop. While it can be a valuable tool for refining performances, its overuse or misuse can sometimes lead to a perception of artificiality.