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Vocal Stem Tool

Vocal Pitch & Speed Changer

Make an isolated vocal deeper, brighter, faster, or slower while keeping the file private on your device.

PitchSpeedNatural VoiceMP3 & WAV
No vocal loaded yet.
Upload a vocal stem to draw the waveform
00:00.000 Result timeline Total duration 00:00.000
Quick presets

Turn character preservation off for exaggerated deep or high effects.

About This Tool

Change an isolated vocal stem's key, pace, and character without sending it to a server.

Pitch moves the entire vocal in musical semitones while speed changes its duration independently. Natural character preservation keeps vocal resonances steadier; turning it off creates more exaggerated deep or high effects.

Practical tips

  • Use WAV when the vocal will return to a mix or music editor.
  • Start with shifts of one to four semitones for more natural results.
  • Extreme pitch or speed settings can introduce audible processing artifacts.

Common questions

Does this tool separate vocals from a finished song?

No. Upload an isolated vocal stem from Flow Music, a stem separator, or another audio editor.

Can speed change without making the singer sound higher or lower?

Yes. Speed and pitch are independent, so changing speed alone preserves the selected musical pitch.

Is my vocal uploaded or used to train an AI model?

No. Decoding, pitch and speed processing, preview, and MP3/WAV export run locally in your browser.