Octave Explainer

Plays notes on a small keyboard to show that an octave is a 2:1 frequency ratio.

Artifact by Simon Willison

IndexedApache-2.0EducationNo sign-up

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Opens tools.simonwillison.net in a new tab. Nothing to install.

Open Octave Explainer Source code

You provide: Keyboard clicks
You get: Sound and frequency visuals
Account: No sign-up needed
AI: No AI: a plain tool
Your input: Not stated: check the tool's privacy notes before using private data
Price: Free to use
Made with: AI-built app
Source: Open source
Link check: Answered on Nov 1, 2026

About

Octave Explainer is an AI-built single-page app in the education category (music theory). It opens in your browser, so there is nothing to install. You provide keyboard clicks and get sound and frequency visuals. It needs no account. It is a plain tool: no AI model is involved. The source code is public on GitHub (simonw/tools).

Category: Education · music theory

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Details

Auth: No auth
License: Apache-2.0
Repository: github.com/simonw/tools
Website: tools.simonwillison.net/octave-explainer
First seen: Oct 31, 2026
Last checked: Nov 1, 2026
Source: GitHub

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Cite this page

Octave Explainer: free online tool. Agent Mart. https://agentmart.dev/artifacts/octave-explainer (last updated 2026-11-01)