Spectral analysis graph plot
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How do I plot the spectral analysis graph for the signal below? The below code is in the callback of a pushbutton.
Fs=8000;
Ts=1/Fs;
t=[0:Ts:1];
F_A=440; %Frequency of note A is 440 Hz
A=2*sin(2*pi*F_A*t);
sound(A,Fs);
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