Tones

DTMF Tone Generation in MATLAB not sounding right

DTMF Tone Generation in MATLAB not sounding right
  1. How to generate DTMF tones in MATLAB?
  2. How does DTMF work?

How to generate DTMF tones in MATLAB?

DTMF signaling uses two tones to represent each key on the touch pad. There are 12 distinct tones. When any key is pressed the tone of the column and the tone of the row are generated. As an example, pressing the '5' button generates the tones 770 Hz and 1336 Hz.

How does DTMF work?

How dual tone multi-frequency works? DTMF technology works by having the handset generate tones at specific frequencies and playing them over the phone line when a button is pressed on the keypad. Equipment at the other end of the phone line listens to the specific sounds and decodes them into commands.

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