Filter emg 7-10-15 v1
Dependencies: HIDScope mbed MODSERIAL
Diff: Filterdesigns.cpp
- Revision:
- 15:c1a8f28d6583
- Parent:
- 14:371e0d505971
- Child:
- 16:8f175d2a472f
diff -r 371e0d505971 -r c1a8f28d6583 Filterdesigns.cpp --- 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);