Generate pure Sine, Square, Sawtooth, and Triangle sound waves (20 Hz - 20,000 Hz) with live oscilloscope.
Execution runs 100% locally inside the browser sandbox using HTML5 Canvas, Web Cryptography Subtle API, and Web Workers. Zero egress.
Zero network latency. Operates completely offline with zero dependencies on third-party backend servers or cloud services.
Built according to official RFC specifications, cryptographic test vectors, and enterprise-grade data transformation standards.
Choose Sine, Square, Sawtooth, or Triangle oscillator wave.
Use the pitch slider or type an exact frequency in Hertz (e.g. 440 Hz for Concert A).
Click Play Tone to hear the synthesized audio and observe the live oscilloscope waveform.
It uses the native Web Audio API OscillatorNode directly inside your browser without any audio sample streaming.
Concert Pitch A4 is standardized at 440 Hz, used as the global tuning reference for orchestral musical instruments.
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