This repository contains all the codes and files for DTMF Decoder and Encoder project which can be used in Signals and System Subject.
Basic Introduction:
• 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 digits on a phone keypad.
• DTMF Decoder is also used for receiving data transmissions over the air in amateur radio frequency bands.
• The signal is encoded as a pair of sinusoidal (sine wave) tones from the table below which are mixed with each other.
• Each DTMF tone is actually two tones – a low-frequency tone and a high-frequency tone combined, that’s why it is dual-tone multi-frequency.
• Looking at the standard phone keypad as a grid, the low tone corresponds to the row, while the high tone corresponds to the column.
• DTMF was known throughout the Bell System by the trademark TouchTone. The term was first used by AT&T on July 5, 1960, and was introduced to the public on November 18, 1963.
Check out more detailed information CLICK HERE
Matlab Software should be installed in the computer.
Pull requests and any corrections to the codes are welcome. For major changes, please open an issue first to discuss what you would like to change.
You can contact me on LinkedIn if you want to discuss anything else.
