Mathieu Garivet / FiltrePB

Filtre passe bas simple

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API Documentation at this revision

Revision 3:79a6e3d33887, committed 2016-02-17

Comitter:
garivetm
Date:
Wed Feb 17 10:13:07 2016 +0000
Parent:
2:46a658fe2f70
Commit message:
Bug correction in filtre formula

Changed in this revision

FiltrePB.cpp Show annotated file Show diff for this revision Revisions of this file 
--- a/FiltrePB.cpp	Mon Feb 15 17:19:56 2016 +0000
+++ b/FiltrePB.cpp	Wed Feb 17 10:13:07 2016 +0000
@@ -7,11 +7,11 @@
     vep_m=vsp_m=vs_m=0.0;
     tau_m=1.0/(fc_m*2*3.1415);    //calcul de la constante de temps
     a_m=1.0/(1+(2*tau_m/Ts_m));     //calcul du coefficient a du filtre
-    b_m=(1-(2*tau_m/Ts_m))*a_m;       //calcul du coefficient b du filtre
+    b_m=(1.0-(2*tau_m/Ts_m))*a_m;       //calcul du coefficient b du filtre
 }
 
 float FiltrePB::compute(float ve){
-    vs_m=a_m*ve+a_m*vep_m+b_m*vsp_m;       
+    vs_m=a_m*ve+a_m*vep_m-b_m*vsp_m;       
     vep_m=ve;
     vsp_m=vs_m;      
     return vs_m;