nog een mooie biquad geniet ervan
Dependencies: HIDScope biquadFilter mbed
main.cpp@0:f9aed4422fcb, 2015-10-16 (annotated)
- Committer:
- Paashaas
- Date:
- Fri Oct 16 09:39:22 2015 +0000
- Revision:
- 0:f9aed4422fcb
een nog veel mooiere filter;
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
Paashaas | 0:f9aed4422fcb | 1 | #include "mbed.h" |
Paashaas | 0:f9aed4422fcb | 2 | #include "HIDScope.h" |
Paashaas | 0:f9aed4422fcb | 3 | #include "biquadFilter.h" |
Paashaas | 0:f9aed4422fcb | 4 | |
Paashaas | 0:f9aed4422fcb | 5 | AnalogIn emg1(A0); //onderste board |
Paashaas | 0:f9aed4422fcb | 6 | AnalogIn emg2(A1); // 2e board |
Paashaas | 0:f9aed4422fcb | 7 | AnalogIn emg3(A2); // 3e board |
Paashaas | 0:f9aed4422fcb | 8 | AnalogIn emg4(A3); // bovenste board |
Paashaas | 0:f9aed4422fcb | 9 | |
Paashaas | 0:f9aed4422fcb | 10 | Ticker sample_ticker; // naam van de emg-ticker |
Paashaas | 0:f9aed4422fcb | 11 | |
Paashaas | 0:f9aed4422fcb | 12 | HIDScope scope(2); // aantal kanalen voor je HIDScope |
Paashaas | 0:f9aed4422fcb | 13 | |
Paashaas | 0:f9aed4422fcb | 14 | //highpass filter 20 Hz |
Paashaas | 0:f9aed4422fcb | 15 | const double numhigh_1 = 0.956543225556877; |
Paashaas | 0:f9aed4422fcb | 16 | const double numhigh_2 = -1.91308645113754; |
Paashaas | 0:f9aed4422fcb | 17 | const double numhigh_3 = 0.956543225556877; |
Paashaas | 0:f9aed4422fcb | 18 | const double denhigh_2 = -1.91197067426073; |
Paashaas | 0:f9aed4422fcb | 19 | const double denhigh_3 = 0.9149758348014341; |
Paashaas | 0:f9aed4422fcb | 20 | |
Paashaas | 0:f9aed4422fcb | 21 | //notchfilter 50Hz |
Paashaas | 0:f9aed4422fcb | 22 | //biquad 1 |
Paashaas | 0:f9aed4422fcb | 23 | const double numnotch_1_1 = 1; |
Paashaas | 0:f9aed4422fcb | 24 | const double numnotch_1_2 = -1.97538661427765; |
Paashaas | 0:f9aed4422fcb | 25 | const double numnotch_1_3 = 1.00000018882502; |
Paashaas | 0:f9aed4422fcb | 26 | const double dennotch_1_2 = -1.97024348390877; |
Paashaas | 0:f9aed4422fcb | 27 | const double dennotch_1_3 = 0.995504923090779; |
Paashaas | 0:f9aed4422fcb | 28 | |
Paashaas | 0:f9aed4422fcb | 29 | //biquad 2 |
Paashaas | 0:f9aed4422fcb | 30 | const double numnotch_2_1 = 1; |
Paashaas | 0:f9aed4422fcb | 31 | const double numnotch_2_2 = -1.97538624436946; |
Paashaas | 0:f9aed4422fcb | 32 | const double numnotch_2_3 = 1.00000018882502; |
Paashaas | 0:f9aed4422fcb | 33 | const double dennotch_2_2 = -1.97175302143845; |
Paashaas | 0:f9aed4422fcb | 34 | const double dennotch_2_3 = 0.995629024908953; |
Paashaas | 0:f9aed4422fcb | 35 | |
Paashaas | 0:f9aed4422fcb | 36 | //lowpass filter 7 Hz - envelop |
Paashaas | 0:f9aed4422fcb | 37 | const double numlow_1 = 0.000119046743110057; |
Paashaas | 0:f9aed4422fcb | 38 | const double numlow_2 = 0.000238093486220118; |
Paashaas | 0:f9aed4422fcb | 39 | const double numlow_3 = 0.000119046743110057; |
Paashaas | 0:f9aed4422fcb | 40 | const double denlow_2 = -1.968902268531908; |
Paashaas | 0:f9aed4422fcb | 41 | const double denlow_3 = 0.9693784555043481; |
Paashaas | 0:f9aed4422fcb | 42 | |
Paashaas | 0:f9aed4422fcb | 43 | |
Paashaas | 0:f9aed4422fcb | 44 | double u1 = emg1.read(); //inputvariables |
Paashaas | 0:f9aed4422fcb | 45 | double u2 = emg2.read(); |
Paashaas | 0:f9aed4422fcb | 46 | double u3 = emg3.read(); |
Paashaas | 0:f9aed4422fcb | 47 | double u4 = emg4.read(); |
Paashaas | 0:f9aed4422fcb | 48 | |
Paashaas | 0:f9aed4422fcb | 49 | |
Paashaas | 0:f9aed4422fcb | 50 | biquadFilter highpass( denhigh_2 , denhigh_3 , numhigh_1 , numhigh_2 , numhigh_3); // removes artifacts |
Paashaas | 0:f9aed4422fcb | 51 | biquadFilter notch1( dennotch_1_2 , dennotch_1_3 , numnotch_1_1 , numnotch_1_2 , numnotch_1_3 ); // removes 49-51 Hz power interference |
Paashaas | 0:f9aed4422fcb | 52 | biquadFilter notch2( dennotch_2_2 , dennotch_2_3 , numnotch_2_1 , numnotch_2_2 , numnotch_2_3 ); // |
Paashaas | 0:f9aed4422fcb | 53 | biquadFilter lowpass( denlow_2 , denlow_3 , numlow_1 , numlow_2 , numlow_3 ); // EMG envelope |
Paashaas | 0:f9aed4422fcb | 54 | |
Paashaas | 0:f9aed4422fcb | 55 | biquadFilter highpass_2( denhigh_2 , denhigh_3 , numhigh_1 , numhigh_2 , numhigh_3); |
Paashaas | 0:f9aed4422fcb | 56 | biquadFilter notch1_2( dennotch_1_2 , dennotch_1_3 , numnotch_1_1 , numnotch_1_2 , numnotch_1_3 ); // removes 49-51 Hz power interference |
Paashaas | 0:f9aed4422fcb | 57 | biquadFilter notch2_2( dennotch_2_2 , dennotch_2_3 , numnotch_2_1 , numnotch_2_2 , numnotch_2_3 ); // |
Paashaas | 0:f9aed4422fcb | 58 | biquadFilter lowpass_2( denlow_2 , denlow_3 , numlow_1 , numlow_2 , numlow_3 ); // EMG envelope |
Paashaas | 0:f9aed4422fcb | 59 | |
Paashaas | 0:f9aed4422fcb | 60 | biquadFilter highpass_3( denhigh_2 , denhigh_3 , numhigh_1 , numhigh_2 , numhigh_3); |
Paashaas | 0:f9aed4422fcb | 61 | biquadFilter notch1_3( dennotch_1_2 , dennotch_1_3 , numnotch_1_1 , numnotch_1_2 , numnotch_1_3 ); // removes 49-51 Hz power interference |
Paashaas | 0:f9aed4422fcb | 62 | biquadFilter notch2_3( dennotch_2_2 , dennotch_2_3 , numnotch_2_1 , numnotch_2_2 , numnotch_2_3 ); // |
Paashaas | 0:f9aed4422fcb | 63 | biquadFilter lowpass_3( denlow_2 , denlow_3 , numlow_1 , numlow_2 , numlow_3 ); // EMG envelope |
Paashaas | 0:f9aed4422fcb | 64 | |
Paashaas | 0:f9aed4422fcb | 65 | biquadFilter highpass_4( denhigh_2 , denhigh_3 , numhigh_1 , numhigh_2 , numhigh_3); |
Paashaas | 0:f9aed4422fcb | 66 | biquadFilter notch1_4( dennotch_1_2 , dennotch_1_3 , numnotch_1_1 , numnotch_1_2 , numnotch_1_3 ); // removes 49-51 Hz power interference |
Paashaas | 0:f9aed4422fcb | 67 | biquadFilter notch2_4( dennotch_2_2 , dennotch_2_3 , numnotch_2_1 , numnotch_2_2 , numnotch_2_3 ); // |
Paashaas | 0:f9aed4422fcb | 68 | biquadFilter lowpass_4( denlow_2 , denlow_3 , numlow_1 , numlow_2 , numlow_3 ); // EMG envelope |
Paashaas | 0:f9aed4422fcb | 69 | |
Paashaas | 0:f9aed4422fcb | 70 | void myController() |
Paashaas | 0:f9aed4422fcb | 71 | { |
Paashaas | 0:f9aed4422fcb | 72 | |
Paashaas | 0:f9aed4422fcb | 73 | highpass.step (u1); |
Paashaas | 0:f9aed4422fcb | 74 | notch1.step (u1); |
Paashaas | 0:f9aed4422fcb | 75 | notch2.step (u1); |
Paashaas | 0:f9aed4422fcb | 76 | lowpass.step (u1); |
Paashaas | 0:f9aed4422fcb | 77 | |
Paashaas | 0:f9aed4422fcb | 78 | highpass_2.step (u2); |
Paashaas | 0:f9aed4422fcb | 79 | notch1_2.step (u2); |
Paashaas | 0:f9aed4422fcb | 80 | notch2_2.step (u2); |
Paashaas | 0:f9aed4422fcb | 81 | lowpass_2.step (u2); |
Paashaas | 0:f9aed4422fcb | 82 | |
Paashaas | 0:f9aed4422fcb | 83 | highpass_3.step (u3); |
Paashaas | 0:f9aed4422fcb | 84 | notch1_3.step (u3); |
Paashaas | 0:f9aed4422fcb | 85 | notch2_3.step (u3); |
Paashaas | 0:f9aed4422fcb | 86 | lowpass_3.step (u3); |
Paashaas | 0:f9aed4422fcb | 87 | |
Paashaas | 0:f9aed4422fcb | 88 | highpass_4.step (u4); |
Paashaas | 0:f9aed4422fcb | 89 | notch1_4.step (u4); |
Paashaas | 0:f9aed4422fcb | 90 | notch2_4.step (u4); |
Paashaas | 0:f9aed4422fcb | 91 | lowpass_4.step (u4); |
Paashaas | 0:f9aed4422fcb | 92 | |
Paashaas | 0:f9aed4422fcb | 93 | } |
Paashaas | 0:f9aed4422fcb | 94 | |
Paashaas | 0:f9aed4422fcb | 95 | int main() |
Paashaas | 0:f9aed4422fcb | 96 | { |
Paashaas | 0:f9aed4422fcb | 97 | sample_ticker.attach(&myController,0.002); |
Paashaas | 0:f9aed4422fcb | 98 | while (true){ |
Paashaas | 0:f9aed4422fcb | 99 | } |
Paashaas | 0:f9aed4422fcb | 100 | } |