Free · Glide from low to high

Alien Pitch Sweep Voice for Kids

Hear one space signal sweep through several pitches in a real audio worklet.

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

Alien pitch sweep voice

Glide pitch from low to high like a friendly space signal.

+10 semitones1.782× pitch factor
1Local soundsweep pattern
2Phaze workletFFT + peak shift + phase fix
3Changed pitchsame demo length
OriginalChanged
0.0 s-100.561×
1.6 s+101.782×
3.5 s-50.749×

Sweep from low to high and back.

Listen for this:A pitch sweep moves the same sound through many pitch factors.

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.