// effects · tool 10
Pitch Shifter
Raise or lower the pitch by up to 12 semitones — the speed and length stay exactly the same.
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Change pitch without changing speed
Ordinary resampling (like a turntable) shifts pitch and speed together. This tool decouples them: it granularly time-stretches your audio with overlapping Hann-windowed grains, then resamples the result, so the pitch lands where you want while the duration stays sample-accurate. All of it runs in your browser via the Web Audio API — no upload, no install.
Common uses
- Transposing backing tracks — move a song into a singer's comfortable range.
- Practice — learn a song in an easier key, then step back up semitone by semitone.
- Effects — deep-voice (−5 and below) or chipmunk (+7 and up) vocal treatments.
- Key matching — nudge one track to match another before mixing. Check keys first with our BPM & Key Finder.
Quality expectations
Granular shifting is fast and dependency-free, but extreme shifts (±8 semitones and beyond) introduce audible texture, especially on percussive material. Within ±5 semitones, music and voice stay natural.
FAQ
Does shifting pitch change the song's speed?
No. Granular time-stretching plus resampling keeps the duration exactly the same while the pitch moves.
How far can I shift the pitch?
Up to 12 semitones (one octave) in either direction. Large shifts add artifacts — within ±5 semitones results stay natural.
What is this useful for?
Transposing backing tracks, practicing in easier keys, deep/chipmunk voice effects, and matching keys between tracks before mixing.