Tests & Toys
Tone Generator
Sine, square, triangle, saw — 20Hz to 20kHz at guarded volume.
✓ Free
✓ No account
◉ Runs on this device
Tests & Toys
Powering up the tool…
TOOL TONE-GENERAT
What this tool does
About the tone generator
Frequency testing with hearing-safety front and centre.
How to use it
- Set frequency and wave.
- Play at the fixed safe volume.
- Sweep by retyping frequencies.
- High frequencies: brief and quiet, always.
Useful for
- Test speakers and crossover behaviour.
- Find resonant rattles in a room.
- Gently explore your hearing ceiling.
Straight answers
Tone Generator FAQ
Why is the volume capped?
Pure tones concentrate energy at one frequency — headphone damage happens FAST above moderate levels, especially 2–8kHz where ears are most sensitive. The cap plus the warning is the tool taking hearing seriously; please match it.
What do the waveforms sound like?
Sine is the pure reference; square is hollow and buzzy (odd harmonics); triangle is a softer square; saw is bright and brassy (all harmonics). Speaker testing wants sine; the rest are for ears and synthesis intuition.