% Set number of iterations and wavelet name. 
%axis on
load kombi1x;
inputsig=kombi1x;

wav = 'db2';
wav2= 'db1';
wav3= 'db1';


[apr,dif]=DWT(inputsig,wav); 
[apr2,dif2]=DWT(dif,wav2) ;
[apr3,dif3]=DWT(dif2,wav3) ;

subplot(4,1,1)
plot(inputsig,'LineWidth',2)
subplot(4,1,2)
plot(dif,'LineWidth',2)
set(gca,'Xlim',[0 length(dif)])
subplot(4,1,3)
plot(dif,'LineWidth',2)
set(gca,'Xlim',[0 length(dif)])
subplot(4,1,4)
plot(dif,'LineWidth',2)
set(gca,'Xlim',[0 length(dif)])