How Auto Tune Works Using Digital Signal Processing

This video explains how Auto-Tune works using Digital Signal Processing (DSP).

Auto-Tune is widely used in music production to correct pitch in real time, but behind it lies a structured signal processing pipeline. In this video, I cover the complete working of Auto-Tune from a DSP perspective.

Topics covered:
• Source–Filter Model of Speech
• Harmonic Structure and Pitch (F₀)
• Pitch Detection (Autocorrelation, Cepstrum)
• Pitch Quantization (Nonlinear Mapping)
• Time-Frequency Processing using STFT
• Phase Continuity and Reconstruction
• PSOLA Method
• Formant Preservation using LPC
• Retune Speed and Robotic Effect
• System-Level Understanding (Nonlinear, Time-Varying DSP)

Видео How Auto Tune Works Using Digital Signal Processing канала JAINAM SONIGARA