Merge pull request #13 from ltcptgeneral/DarellsAnnex

App is partially functional. Change directory to your directory inside the app to use functions.

src/AmpEnvelopeSelect.m

@@ -0,0 +1,8 @@
+function output = AmpEnvelopeSelect(input, Fs, attack,decay,sustain,release,number)
+    if(number == "Option 1")
+        output = DarellAmplitudeEnvelope(input, Fs, attack,decay,sustain,release);
+    else
+        output = input;
+    end
+end 
+

src/DarellbandpassFilter.m

@@ -3,7 +3,7 @@ function output_y = DarellbandpassFilter(y,Fs,LOW,MED,HIGH)
     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
+    output =  zeros([1,lenf]); % zero array of size Mod_freq
     
     for n = 1:lenf
         if ((LOW < abs(F(n))) && HIGH > abs(F(n)))
@@ -14,7 +14,6 @@ function output_y = DarellbandpassFilter(y,Fs,LOW,MED,HIGH)
     end
         
     filtered_Mod_Freq = fftshift(Mod_Freq .* output);
-    
     output_y = real(ifft(filtered_Mod_Freq));
     
 end

src/PitchEnvelopeSelect.m

@@ -0,0 +1,8 @@
+function output = PitchEnvelopeSelect(input, Fs, attack,decay,sustain,release,number)
+    if(number == "Option 1")
+        output = DarellAmplitudeEnvelope(input, Fs, attack,decay,sustain,release);
+    else
+        output = input;
+    end
+end 
+

src/SoundGeneratorSelect.m

@@ -0,0 +1,13 @@
+function output = SoundGeneratorSelect(amplitude, frequency, phase, fs, duration, duty,number)
+    if(number == "Option 1")
+        output = generate_sine(amplitude, frequency, phase, fs, duration, duty);
+    elseif(number == "Option 2")
+        output = generate_square(amplitude, frequency, phase, fs, duration, duty);
+    elseif(number == "Option 3")
+        output = generate_triangle(amplitude, frequency, phase, fs, duration, duty);
+    
+    else
+        output = 0;
+    end
+end 
+