From 511b5bbfcc25fb5e012bf2e31eb42db7b92f5917 Mon Sep 17 00:00:00 2001
From: Yanis HERY <y22hery@fl-tp-br-664.imta.fr>
Date: Wed, 26 Mar 2025 12:03:32 +0100
Subject: [PATCH] =?UTF-8?q?Depot=20filtre=20ecg.=20Suite=20=C3=A0=20une=20?=
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---
 docs/img/OperativeUnit.drawio | 472 ++++++++++++++++++++--------------
 src-ref/octaveScript.m        |  10 +-
 2 files changed, 286 insertions(+), 196 deletions(-)

diff --git a/docs/img/OperativeUnit.drawio b/docs/img/OperativeUnit.drawio
index 9bb0e4b..46eeaaa 100644
--- a/docs/img/OperativeUnit.drawio
+++ b/docs/img/OperativeUnit.drawio
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diff --git a/src-ref/octaveScript.m b/src-ref/octaveScript.m
index d62a754..27b1dd7 100644
--- a/src-ref/octaveScript.m
+++ b/src-ref/octaveScript.m
@@ -20,17 +20,23 @@ fBaseLine=fir1(128, 5/Fn, 'high');
 y_minus_BL=filter(fBaseLine,[1],T(:,2));
 subplot(2,3,2);plot(y_minus_BL);title('Baseline wander reduced');xlabel('Samples (Fs=500Hz)');ylabel('Magnitude (digital signal)');
 subplot(2,3,3);plot(y_minus_BL(1:1000));title('Baseline wander reduced -- zoomed');xlabel('Samples (Fs=500Hz)');ylabel('Magnitude (digital signal)');
-
+disp('suppression baseline');disp(fir1(128, 5/Fn, 'high'));
 
 %elimination du bruit à 50Hz par un coupe-bande tout basique
 f50Hz=fir1(100, [45 55]/Fn, 'stop');
 y_minus_50Hz_simple = filter(f50Hz,[1],y_minus_BL);
 subplot(2,3,4);plot(y_minus_50Hz_simple(1:1000));title('FIR1 band-cut-- zoomed');xlabel('Samples (Fs=500Hz)');ylabel('Magnitude (digital signal)');
+disp('passe bande simple'); disp(fir1(100, [45 55]/Fn, 'stop'));
+
 
 %elimination du bruit à 50Hz par un coupe-bande plus elabore
 [b,a]=pei_tseng_notch ( 50 / Fn, 10/Fn );
 y_minus_50Hz_pei_tseng = filter(b,a,y_minus_BL);
 subplot(2,3,5);plot(y_minus_50Hz_pei_tseng(1:1000));title('Pei Tseng band-cut -- zoomed');xlabel('Samples (Fs=500Hz)');ylabel('Magnitude (digital signal)');
+disp('passe bande elabore : coeff a'); disp(a);
+disp('passe bande elabore : coeff b'); disp(b);
+
+
 
 %lissage du bruit haute frequence par filtre de Parks-McClellan
 Fpass  = 50;
@@ -40,6 +46,8 @@ A     = [1 1 0 0];
 fLP = remez(10,F,A); % Voir pour Matlab: firpm
 yLP = filter(fLP,[1],y_minus_50Hz_pei_tseng);
 
+disp('filtre haute fréquences'); disp(remez(10,F,A));
+
 subplot(2,3,6);plot(yLP(1:1000));title('Low-pass filter to suppress high-freq noise -- zoomed');xlabel('Samples (Fs=500Hz)');ylabel('Magnitude (digital signal)');
 figure(2)
 subplot(2,1,1);plot(T(:,2));title('Raw ECG signal');xlabel('Samples (Fs=500Hz)');ylabel('Magnitude (digital signal)');
-- 
GitLab