At its core, program autotune is a . It analyzes incoming audio (a voice or an instrument) in real-time, identifies the pitch of the note being sung, and immediately shifts it to the nearest note in a predefined musical scale.
Program Auto-Tune: A Complete Guide to Modern Pitch Correction program autotune
Source: Zhang, S. K., Yoo, B. M., & Meng, J. (2019). A survey of autotuning techniques for high-performance computing applications. Journal of Systems Architecture, 97, 102123. At its core, program autotune is a