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Automatic decoder of DTMF tones 🎶

Description

Automatic decoder of DTMF tones with frequency analysis, using MATLAB and Signal Processing concepts.

Objective

Given a DTMF (dual tone multiple frequency) tone sequence generated by a telephone keypad, create a procedure that decodes a telephone number. Each number is generated by the combination of 2 sinusoidal signals with the duration of 50 ms. It uses a DFT with 512 points.

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Automatic decoder of DTMF tones through frequency analysis

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