Question

Download the Matlab data set data.mat. It contains a DTMF signal with six numbers dialed in...

Download the Matlab data set data.mat. It contains a DTMF signal with six numbers dialed in sequence. Find the phone number dialed.

Data file contains value for Fs = 8000 and 14,400 values for x. Create a Matlab code that will either plot the phone number or solve for it if x and Fs are entered.


No additional informafion is needed. User will load a .mat or .wav file containing x values and Fs value.
Engineering   Electrical-Engineering   
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Gaatho Date solution: y = audiovad: '(''démf .wav"); 2 = plot(y) of which gives me the plot of the 6-digits. ut i shot hot but I need to dicode it to find the frequency range and with that I can find the 6-digit dialed number. to = 8000 , 14,400 To 53 to T* (O!**-1), pit=2***t ; tones - zeros (N. size(t, 6); for tone Choise : 1:6 tones (istones choice ) = sum (sin(f(:, tonechoiu) FRA)), subplot (6,5 tonechoice ) , prot (tx yes, fones (:, tonechoiu)) ; ditle (("symbol", symbol & tonechoiu 3 ,'"')

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