DTMF is the global standard for audible tones that represent the digits on a phone keypad. • DTMF Decoder is also used for receiving data transmissions over the air in amateur radio frequency bands. • ...

It can be used to output DTMF and SelCall sequences which are used by telephone systems and radio-telecommunication hardware. The software is written in J2ME so if you have a cell phone that can ...

The DTMF Decoder processes WAV audio files to decode telephone keypad digits by analyzing the distinct dual-tone frequencies associated with each keypress. It uses the Fast Fourier Transform (FFT) for ...