Diff: Filterdesigns.cpp

Revision:

19:6c0245063b96

Parent:

18:eec0880fcded

Child:

20:11e1244ad2ad

--- a/Filterdesigns.cpp	Mon Oct 12 10:14:18 2015 +0000
+++ b/Filterdesigns.cpp	Tue Oct 13 12:28:32 2015 +0000
@@ -18,6 +18,25 @@
 const double b0_50b = 1.00000000000, b1_50b = -1.61854514929, b2_50b = 1.0;
 const double gain_50b = 0.934872;
 
+// Notch 0-20Hz
+
+// Filter2a: 0-20Hz Notch
+double v1_020a = 0, v2_020a = 0;
+const double a1_020a = -1.78180535801, a2_020a = 0.78747189013;
+const double b0_020a = 1.00000000000, b1_020a = -1.99365972450, b2_020a = 1.0;
+const double gain_020a = 0.893737;
+
+// Filter2b: 0-20Hz Notch
+double v1_020b = 0, v2_020b = 0;
+const double a1_020b = -1.75020314275, a2_020b = 0.80725578229;
+const double b0_020b = 1.00000000000, b1_020b = -1.99365972450, b2_020b = 1.0;
+const double gain_020b = 0.890775;
+
+// Filter2c: 0-20Hz Notch
+double v1_020c = 0, v2_020c = 0;
+const double a1_020c = -1.97815539898, a2_020c = 0.97877726519;
+const double b0_020c = 1.00000000000, b1_020c = -1.99365972450, b2_020c = 1.0;
+const double gain_020c = 0.990804;
 
 //HighPass 20Hz
 
@@ -38,7 +57,7 @@
 
 // constante variabelen:
 
-//double gem = 0.4557; // gemiddelde waarde emgsignaal
+double gem = 0.4557; // gemiddelde waarde emgsignaal
 
 double y=0;
 
@@ -47,7 +66,7 @@
     //u = input waarde
     //y = output waarde
     
-    u = u - ymin; // zorgen dat bij geen signaal u = 0
+    u = u - gem; // zorgen dat bij geen signaal u = 0
     
     // Op deze manier worden de waardes ingelezen in Filter. Zorg dus voor dezelfde volgorde, zodat de waardes goed uitgelezen worden!:
     // Filter(double u, double &v1, double &v2, const double a1, const double a2, const double b0, const double b1, const double b2, const double gain)
@@ -56,6 +75,12 @@
     double y50a = Filter(u, v1_50a, v2_50a, a1_50a, a2_50a, b0_50a, b1_50a, b2_50a, gain_50a);
     double y50b = Filter(y50a, v1_50b, v2_50b, a1_50b, a2_50b, b0_50b, b1_50b, b2_50b, gain_50b);
 
+    // 0-20Hz Notch filter
+    double y020a = Filter(y50a, v1_020a, v2_020a, a1_020a, a2_020a, b0_020a, b1_020a, b2_020a, gain_020a);
+    double y020b = Filter(y020a, v1_020b, v2_020b, a1_020b, a2_020b, b0_020b, b1_020b, b2_020b, gain_020b);
+    double y020c = Filter(y020b, v1_020c, v2_020c, a1_020c, a2_020c, b0_020c, b1_020c, b2_020c, gain_020c);
+
+
     // High Pass filter. Tot 20Hz wordt weggefliterd
     double yHP = Filter(y50b, v1_HP, v2_HP, a1_HP, a2_HP, b0_HP, b1_HP, b2_HP, gain_HP);