Quick Answer: Changing Audio Playback Speed
To speed up or slow down voice recordings without making voices sound high-pitched or distorted, upload your audio to the UMtoons Audio Speed Tool, drag the tempo slider to your desired multiplier (e.g. 1.25x, 1.5x), and download the processed track.
Phase Vocoder: Pitch-Preserved Speed Adjustment
UMtoons implements Phase Vocoder digital signal processing that modifies playback duration independently of frequency, preventing the famous 'chipmunk' pitch effect.
