Free · Half or double pitch

Octave Pitch Shift Explorer for Kids

Hear exactly what one octave down, one octave up, and a wide jump sound like.

  • Clear, kid-friendly steps
  • Private in your browser
  • No signup
Real AudioWorklet pitch shifting

Octave pitch shift explorer

Move a tone exactly one octave down or up with a real phase vocoder.

+12 semitones2.000× pitch factor
1Local soundcompare pattern
2Phaze workletFFT + peak shift + phase fix
3Changed pitchsame demo length
OriginalChanged
0.0 s01.000×
1.7 s01.000×
1.8 s+122.000×
3.5 s+122.000×

Double every sound peak.

Listen for this:One octave up doubles pitch factor. One octave down halves it.

Shape the pitch

Save the pitch idea

Keep a readable guide, spreadsheet timeline, or editable project.

Powered by Phaze phase vocoder AudioWorklet, an open-source library available under The Unlicense.

Three simple steps

How to use it

  1. Pick a ready pitch, then press Play demo sound. Nothing plays on load.
  2. Move the pitch step slider and listen for the change.
  3. Save a pitch guide, timeline sheet, or project you can reopen.

Private by default

Your words and choices stay in this browser tab. There are no accounts, uploads, ads, or trackers inside the tool. Close the tab and the working data is gone.