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I wrote this utility to teach myself to recognize DTMF tones with a high level of accuracy. Apart from being a fully functional DTMF keypad (including the A to D buttons) it will generate a random number of digits which you can then attempt to guess. It will keep track of how many you guess correctly and how well.

With a little practice one can quickly reach a level of competency that is useful for a number of applications. ;)


QuantumG
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