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About DTMF

DTMF decodes and encodes DTMF (Dual-tone multi-frequency) tones trough the phones speaker and microphone.
Encoder: Always 2 tones are assigned to each key.The length of the tone and the pause between the tones can be set from 35ms to 1500ms.
A total of 36 marco’s can be used to play phone numbers, ham radio auto patch numbers, amateur radio echolink id's any many more.The 36 macro's can be saved to the phones/tablets memory. This way a unlimited amount of macros can be used. The DTMF tone length and the pause between the tones can be adjusted.
Decoder: The decoder detects the DTMF tones and prints them on the screen. A sophisticated algorithm detects the tones even in noisy environments.
Please let us know what you think. If you like DTMF please leave us a feedback at Google Market. If you have any suggestions please email us at [email protected]

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This is a very useful app to have in your phone.

Bob D.

Probably the best DTMF app on the market here. I've been using it for over a year now and it has come in handy for several projects that require generating and decoding DTMF tones. Would be cool if the desig...

A Google user

quality dtmf app

Frank Helsell

Very high accuracy in decoding tones, top notch. Better then any other app on the market. Highly recommend. Money well spend.

Alex Shestak

Please make it run in the background too. I recorded a series of DTMF tones with the builtin Voice Recorder and then play it back while this Receives goes in the background.. and it didn't catch it. I want ...