Media

Tone Generator

A local oscillator for audio debugging. Generate sine, square, sawtooth or triangle waves, tune frequency and gain, and use note presets for output device tests, streaming setup and signal-chain checks.

local oscillator · no microphone required
oscillator waveformsine · 440 Hz
harmonic spectrumphase 0°
use cases

Test browser audio output, streaming chains, headphones, channel routing, voice-room setup, or feed the tone into Audio Analyzer from another device. Keep gain conservative.

runtime

Browser-local execution

Inputs stay inside the current tab unless you copy, download or explicitly export.

memory

Session handoff

Magic Paste can pass input to a target tool through sessionStorage, never through the URL.

control

User-owned state

Favorites, recent tools and workflow history are local browser data you can clear from the browser.

smart handoff graph

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session handoff ready
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sponsor

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How to use

  1. 01Choose a waveform and frequency.
  2. 02Click Play to start the local oscillator.
  3. 03Adjust gain carefully, then stop when finished.
02

FAQ

Does it need microphone permission?
No. It generates audio output with Web Audio and does not request microphone access.
Can this damage speakers or hearing?
Very loud sustained tones can be uncomfortable or harmful. Start with low gain and moderate volume.
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