DTMF_Detector

Using Matlab to simulate Dual-Tone Multi-Frequency (DTMF) of telephone

Program Structure :

Main.m

DTMF_tone_generator.m

• button_0 ~ 9
• button_A ~ D
• button_Sign, button_Star

• Dual-Tone_multifrequency_generator

button_SoundAll.m

• Generate a Tone_file.wav

button_Decode.m

• Read Tone_file.wav & Decode
• Goertzel algorithm :

DTMF Frequency (Hz)	Frequency Bin : k
697	18
770	20
852	22
941	24
1209	31
1336	34
1477	38
1633	42

button_Clear.m

• Clear all windows

Program GUI :

Video : https://www.youtube.com/watch?v=yUdI6OeV-q8