His DTMF decoder box uses a CM8870 DTMF decoder chip, which you might assume is all you need to get the job done. This chip performs its duties very well, outputting a 4-bit binary code for each ...

(Sorry for my English, I'm not dumb but French. Feel free to make a PR to correct this README.) Have you always dreamt of finding ...

The objective of the project is to decode dual tone codes into digits which are later interpreted by microcontroller. This device ...

Ever wanted to turn appliances on or off using just a phone call? This 4-channel DTMF relay module makes it possible! It's built ...

Dual Tone Multifrequency (DTMF) oder Mehrfrequenzverfahren (MFV) bezeichnet die Töne, die ein Telefon beim Drücken der Tasten ...

For a hobby that’s ostensibly all about reaching out to touch someone, ham radio can often be a lonely activity. Lots of hams ...

C# implementation of the Goertzel algorithm for DTMF tone (a.k.a. Touch-Tone) detection and localization in audio data.

This project is to build a portal for easy access of the information. Involved in the first phase of the project to build a ...