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src/NotWorking/AnuragDampenTarget.m

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+function output_x = AnuragDampenTarget(x, Fs,LOW, MID, HIGH) 
+%Dampen a range of frequencies a percentage around the target frequency
+%Also maintain the other frequencies so that the target is muted
+%percentage is expressed as a number between 0 and 1.
+%target is the midpoint of the frequency range to dampen
+%x and Fs are the signal and frequency
+% CONTRIBUTORS:
+% Anurag Jadhav: function creator
+
+%   Detailed explanation goes here
+    TARGET = MID;
+    AreaPercentage = 0.15;
+    len = length(x); %get length of the input
+    F = Fs * ((-len/2) : ((len/2) - 1)) / len;
+    lenf = length(F);
+    Mod_Freq = fftshift(fft(x)); %Fourier Transform of the input signal
+    output =  zeros([1,lenf]); % zero array of size Mod_freq
+    %set the bounds
+    lowerBound = (1-AreaPercentage) * TARGET;
+    upperBound = (1+AreaPercentage) * TARGET;
+%% Dampen the target frequencies and maintain the others
+    for n = 1:lenf
+        if ((lowerBound < abs(F(n))) && abs(F(n)) < upperBound)
+            output(n) = 0.5;
+        else
+            output(n) = 1;
+        end
+    end
+
+%%Filter the original signal and transform 
+    filtered_Mod_Freq = fftshift(Mod_Freq .* output);
+    output_x = real(ifft(filtered_Mod_Freq));
+
+end