Audio Frequency Tone Generator
Synthesize pure wave frequencies and visualize the resulting waveforms on a live oscilloscope
A local browser-based sound synthesizer utilizing standard OscillatorNodes to construct audio tones from 20Hz to 20,000Hz. Play Sine, Square, Sawtooth, or Triangle waves and analyze their cycles instantly on a virtual oscilloscope canvas.
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🔒 Everything runs 100% in your browser. Your files and input are never uploaded to any server.
How to use
- Select your target waveform category (Sine, Square, Sawtooth, or Triangle).
- Adjust the frequency slider or type in a specific Hertz value, then hit 'Start Tone'.
- Interact with the 4-octave virtual piano keyboard at the bottom to trigger specific note pitches and inspect the oscilloscope wave.
FAQ
- Is there a safety limiter to prevent hearing damage?
- Yes. We automatically limit the maximum gain to 0.5 and implement linear ramp smoothing on volume adjustments to prevent loud popping sounds from damaging your audio equipment or ears.
- Does this synthesizer require any external audio assets or plugins?
- No. The audio synthesis engine is written entirely on top of the native browser Web Audio API, so it runs offline and without downloading external media files.