Continuous Replay and Filter

Continuous Replay and Filter. Added a test main for people to easily test their filters.

DarellsAnnex/DarellbandpassFilter.m

@@ -0,0 +1,20 @@
+function output_y = DarellbandpassFilter(y,Fs,LOW,MED,HIGH)
+    Len = length(y);
+    F = Fs * (-Len/2 : (Len/2 - 1))/Len ;
+    Mod_Freq = fftshift(fft(y));
+    lenf = length(F);
+    output =  0 .* Mod_Freq; % zero array of len f
+    
+    for n = 1:lenf
+        if ((LOW < abs(F(n))) && HIGH > abs(F(n)))
+            output(n) = 1;
+        else
+            output(n) = 0;
+        end
+    end
+        
+    filtered_Mod_Freq = fftshift(Mod_Freq .* output);
+    
+    output_y = real(ifft(filtered_Mod_Freq));
+    
+end