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Online Tone Generator

Generate sine, square, triangle, or sawtooth tones at any frequency. Useful for testing speakers, tuning instruments, calibration, or sound design.

Test video audio output

The Loudify iOS app embeds test tones into videos for calibration and headroom testing.

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What this tone generator is for

Generate pure-frequency tones for speaker testing, instrument tuning, hearing tests, mixing reference signals, or sound design building blocks.

Waveform comparison

  • Sine — pure tone, only the fundamental. Smoothest, used for calibration.
  • Square — fundamental + all odd harmonics. Buzzy.
  • Triangle — fundamental + odd harmonics that roll off fast. Soft buzz.
  • Sawtooth — fundamental + all harmonics. Buzziest, classic synth lead sound.

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