fileID = fopen('Atemfrequenz1.txt','r');
formatSpec = '%i %i %i %s';
sizeA = [4 Inf];
A = fscanf(fileID,formatSpec,sizeA);
frequenz1 = A(2,:);
frequenz2 = A(3,:);
fs=1;
fpass=0.01;
% Lowpassfilter

lowpassf1 = lowpass(frequenz2, fpass, fs);

fclose(fileID); 
%[lowpassf1,d] = designfilt('lowpassfir','PassbandFrequency',0.25, ...
 %        'StopbandFrequency',0.35,'PassbandRipple',0.5, ...
  %       'StopbandAttenuation',65,'DesignMethod','kaiserwin');
%fvtool(d)
%[lowpassf1,d] = lowpass(rand(1,1024), fpass, fs);
%fvtool(d)


% plot
%x = linspace(0,20*60);
figure 
%subplot(2,1,1);
%plot(lowpassf1);  % Meine gefilterte Daten
subplot(2,1,1);
plot(Atemfrequenz1.VarName3); %Die ungefilterte Daten von Sensor
subplot(2,1,2);
plot(Atemfrequenz1.VarName2); % Die gefilterte Daten von Sensor