Diff: Filterdesigns.cpp

Revision:

21:8fe8419de3e9

Parent:

20:11e1244ad2ad

Child:

24:38cd27737a43

--- a/Filterdesigns.cpp	Wed Oct 14 12:36:42 2015 +0000
+++ b/Filterdesigns.cpp	Wed Oct 14 14:49:47 2015 +0000
@@ -18,34 +18,13 @@
 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
 
 // Filter2a: 20Hz HighPass
 double v1_HP = 0, v2_HP = 0;
-const double a1_HP = 1.64732093404, a2_HP = 0.70900981120;
-const double b0_HP = 1.00000000000, b1_HP = 2.0, b2_HP = 1.00000000000;
-const double gain_HP = 0.84193;
-
+const double a1_HP = -0.76475499450, a2_HP = 0.27692273367;
+const double b0_HP = 1.00000000000, b1_HP = -2.0, b2_HP = 1.00000000000;
+const double gain_HP = 0.510419;
 
 //LowPass 3Hz
 
@@ -57,8 +36,6 @@
 
 // constante variabelen:
 
-double gem = 0.4557; // gemiddelde waarde emgsignaal
-
 double y=0;
 
 double Filterdesigns(double u)
@@ -66,8 +43,6 @@
     //u = input waarde
     //y = output waarde
     
-    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)
 
@@ -75,14 +50,8 @@
     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(y020c, v1_HP, v2_HP, a1_HP, a2_HP, b0_HP, b1_HP, b2_HP, gain_HP);
+    double yHP = Filter(u, v1_HP, v2_HP, a1_HP, a2_HP, b0_HP, b1_HP, b2_HP, gain_HP);
 
     // Absolute waarde wordt genomen.
     double y1 = fabs(yHP);