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Generate sine, square, triangle, sawtooth tones at any frequency.
Generate pure sine, square, triangle, or sawtooth tones at any frequency from 20 Hz to 20 kHz. Useful for hearing tests, speaker calibration, instrument tuning, tinnitus matching, and audio experimentation. Stereo channel selector, smooth attack/release, fully browser-based — no audio uploaded.
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Warning: Start at low volume — pure tones at high volumes can cause hearing damage. Frequencies above ~17–18 kHz become inaudible with age. Square and sawtooth waves are loud due to rich harmonic content.
