Free · Watch pitch move over time

Tone Spectrogram Explorer for Kids

Play a generated tone sweep and watch its frequency band move upward.

  • Clear, kid-friendly steps
  • Private in your browser
  • No signup

Make music

Tone spectrogram explorer

Play a local tone sweep and watch frequency energy build over time.

Private and localNo account, upload, microphone, or remote sound files.

Your sound

Middle tone sweep

Generated tones onlyNo microphone needed

Sweep from 220 to 880 hertz without using a microphone.

Shape your music

Changes stay quiet until you press Play.

Keep your work

Download music, data, or a picture

MIDI opens in music apps. The project file opens here again.

Built from reviewed open source. Adapted from Chrome Music Lab experiment ideas at commit e54bb414908d. Apache-2.0 license. Bookify uses new local audio and does not use Google branding.

Source

Powered by Chrome Music Lab (adapted local music experiments), an open-source library available under Apache-2.0.

Three simple steps

How to use it

  1. Pick a ready example, then change one note, chord, or sound control.
  2. Press Play to hear it. Sound starts only when you ask.
  3. Save MIDI, a picture, note data, or a project you can open again.

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.