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Frequency Lab
Audio tone generator with oscilloscope-style visual and an approximate light-frequency color companion.
Ready
Choose frequency
Keep volume low. Phone speakers and ears are not laboratory equipment, despite what late-night inventors may claim.
Oscilloscope view
Light frequency companion
The screen color is an approximate visual match created by octave-mapping the audio frequency into the visible-light range. A phone screen uses RGB pixels, so this is a color companion — not exact single-frequency light.
Audio
432 Hz
Mapped light
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Approx wavelength
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Color
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Safety: no rapid flashing is used. Avoid staring at bright light effects if you are sensitive to flashing or visual motion.