DTMF Encoder Decoder is very easy to use the program to decode DTMF dial tones found on telephone lines with touch-tone phones. • DTMF is the global standard for audible tones that represent the ...

This project is a Dual-Tone Multi-Frequency (DTMF) encoder and decoder, developed as part of the High Performance Coding class. The system is designed to encode a text message into DTMF tones and ...

The circuit shows one way of obtaining a voltage of 90V from a 1.5V battery supply. The LT1073 switching regulator from Linear Technology operates in... More ...