Diff: Filterdesigns.cpp

Revision:

15:c1a8f28d6583

Parent:

14:371e0d505971

Child:

16:8f175d2a472f

--- a/Filterdesigns.cpp	Thu Oct 08 15:31:50 2015 +0000
+++ b/Filterdesigns.cpp	Fri Oct 09 09:00:16 2015 +0000
@@ -9,53 +9,33 @@
 
 // Filter1a: 50Hz Notch
 double v1_50a = 0, v2_50a = 0;
-const double a1_50a = -4.45616687966, a2_50a = 0.0;
-const double b0_50a = 1.00000000000, b1_50a = -4.45738754850, b2_50a = 0.0;
+const double a1_50a = -1.52337295428, a2_50a = 0.93195385841;
+const double b0_50a = 1.00000000000, b1_50a = -1.61854514929, b2_50a = 1.0;
 const double gain_50a = 1.000000;
 
 // Filter1b: 50Hz Notch
 double v1_50b = 0, v2_50b = 0;
-const double a1_50b = 6.24687974012, a2_50b = 9.75279168287;
-const double b0_50b = 1.00000000000, b1_50b = 6.24687974012, b2_50b = 9.75587662190;
-const double gain_50b = 1.0;
-
-// Filter1c: 50Hz Notch
-double v1_50c = 0, v2_50c = 0;
-const double a1_50c = -1.93135518860, a2_50c = 0.93135518860;
-const double b0_50c = 1.00000000000, b1_50c = -1.93013451976, b2_50c = 0.931354816092;
-const double gain_50c = 1.0;
+const double a1_50b = -1.60486796113, a2_50b = 0.93780356783;
+const double b0_50b = 1.00000000000, b1_50b = -1.61854514929, b2_50b = 1.0;
+const double gain_50b = 0.934872;
 
 
 //HighPass 20Hz
 
 // Filter2a: 20Hz HighPass
-double v1_HPa = 0, v2_HPa = 0;
-const double a1_HPa = 1.64732093404, a2_HPa = 0.0;
-const double b0_HPa = 1.00000000000, b1_HPa = 1.67405904258, b2_HPa = 0.00000000000;
-const double gain_HPa = 1.0;
-
-// Filter2b: 20Hz HighPass
-double v1_HPb = 0, v2_HPb = 0;
-const double a1_HPb = -1.70079715112, a2_HPb = 0.70079715112;
-const double b0_HPb = 1.00000000000, b1_HPb = -1.67405904258, b2_HPb = 0.70079715112;
-const double gain_HPb = 1.0;
+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;
 
 
 //LowPass 3Hz
 
 // Filter3a: 3Hz LowPass
-double v1_LPa = 0, v2_LPa = 0;
-const double a1_LPa = 1.94667622076, a2_LPa = 0.00000000000;
-const double b0_LPa = 1.00000000000, b1_LPa = -0.00034631471, b2_LPa = 0.00000000000;
-const double gain_LPa = 1.00000000000;
-
-// Filter3b: 3Hz LowPass
-double v1_LPb = 0, v2_LPb = 0;
-const double a1_LPb = -1.94667622076, a2_LPb = 0.94806147959;
-const double b0_LPb = 1.00000000000, b1_LPb = -0.00103894412, b2_LPb = 0.00000023987;
-const double gain_LPb = 1.0;
-
-
+double v1_LP = 0, v2_LP = 0;
+const double a1_LP = -1.93503824887, a2_LP = 0.93708289663;
+const double b0_LP = 1.00000000000, b1_LP = 2.0, b2_LP = 1.00000000000;
+const double gain_LP = 0.000511;
 
 // constante variabelen:
 
@@ -81,20 +61,17 @@
     // 50Hz Notch filter
     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);
-    double y50c = Filter(y50b, v1_50c, v2_50c, a1_50c, a2_50c, b0_50c, b1_50c, b2_50c, gain_50c);
 
     // High Pass filter. Tot 20Hz wordt weggefliterd
-    double yHPa = Filter(y50c, v1_HPa, v2_HPa, a1_HPa, a2_HPa, b0_HPa, b1_HPa, b2_HPa, gain_HPa);
-    double yHPb = Filter(yHPa, v1_HPb, v2_HPb, a1_HPb, a2_HPb, b0_HPb, b1_HPb, b2_HPb, gain_HPb);
+    double yHP = Filter(y50b, v1_HP, v2_HP, a1_HP, a2_HP, b0_HP, b1_HP, b2_HP, gain_HP);
 
     // Absolute waarde wordt genomen.
-    double y1 = fabs(yHPb);
+    double y1 = fabs(yHP);
 
     // Low Pass filter. Alles vanaf 5Hz wordt weggefilterd
-    double yLPa = Filter(y1, v1_LPa, v2_LPa, a1_LPa, a2_LPa, b0_LPa, b1_LPa, b2_LPa, gain_LPa);
-    double yLPb = Filter(yLPa, v1_LPb, v2_LPb, a1_LPb, a2_LPb, b0_LPb, b1_LPb, b2_LPb, gain_LPb);
+    double yLP = Filter(y1, v1_LP, v2_LP, a1_LP, a2_LP, b0_LP, b1_LP, b2_LP, gain_LP);
 
-    y = yLPb;
+    y = yLP;
 
     ymean = Meanvalue(y, sum, a, ymean, delay);
     //ymean = Meansmooth(y, samples_length, ymean);