Change any voice by ±12 semitones with time-preserving pitch shift, plus robot and echo effects. Live preview and export, all in your browser.
The voice changer shifts a voice up or down by up to twelve semitones without changing its timing — the words stay the same length, only the pitch moves, thanks to a time-preserving pitch shifter. On top of that you can flip on two character effects: Robot, a ring modulator that gives that metallic robotic timbre, and Echo, a feedback delay that trails each word off in repeats. Both toggle live while you preview.
Use it for a disguised voice, a deep or chipmunk character, or a robotic narrator — then export. Small pitch shifts sound the most natural; large jumps near a full octave get more artificial, which is a normal limit of real-time pitch shifting. If you only need a clean musical transpose, the pitch changer is the tool; the guide how to pitch shift without ruining vocals explains why big shifts get grainy.
It uses a time-preserving pitch shifter, so moving a voice up or down (by up to ±12 semitones) keeps the original timing and length — the words don't speed up or slow down the way they would if you just changed playback speed. Shift up for a higher, brighter character and down for a deeper one. Small shifts sound the most natural; large jumps near the full octave get more artificial, which is a normal limit of real-time pitch shifting.
Robot applies ring modulation — the voice is multiplied by a low oscillator tone, giving that classic metallic, robotic timbre. Echo adds a repeating delay with feedback, so each word trails off in fading repeats. You can turn either on or off while previewing and hear the change live, and combine them with any pitch setting for the character you want.
No. The file is decoded, processed, and exported entirely in your browser using your device's own audio engine — the pitch shift, the effects, and the render all run locally, and nothing about the recording is ever transmitted. That makes it safe for private voice notes or anything you'd rather not send to a server. To confirm, run it once and then disconnect from the internet: it keeps working.