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Online Tone Generator

DTMF Dial Tones

The Online Tone Generator can be used to create Dual Tone Multi Frequency (DTMF) signals commonly heard on telephone dial pads. Each tone is simply the sum of two sine waves. Click and hold the dial pad buttons to hear each tone.

Online Tone Generator utilises HTML5 and the Web Audio API. It is optimized for use with the latest versions of Chrome, Safari, Firefox and Microsoft Edge.
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