Need betterment for the Moving average filter

Question

Gova ReDDy 2013-12-28

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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/110877-need-betterment-for-the-moving-average-filter

关闭： MATLAB Answer Bot 2021-8-20

signal1.mat

Hello, I made a moving average filter that has five sub windows say P1,p2,p3,p4,p5 where p1 has the current 500 values of the signal and p2:previous 500 values ,p3:500 values prior to p2,p4:500 values prior to p3,p5:500 values prior to p4 as shown in the below code and also it replaces the current 500 values of the signal with the average of the 2500 values i.e,p1(current values)+p2+p3+p4+p5.

clc;     
clear all;
nm=load('signal1.mat');
nm1=nm.nomotion(4000:40000,:);
 p1=zeros(500,1);
 p2=p1;
 p3=p2;
 p4=p3;
 p5=p4;
   for i=1:500:length(nm1)-500
       if (i<500) 
            p5=nm1(i:i+499,:); 
            out1(i:i+499,:)=p5;
       elseif (i<1000)
            p4=nm1(i:i+499,:);
            out1(i:i+499,:)=p4;
       elseif(i<1500)
           p3=nm1(i:i+499,:);
           out1(i:i+499,:)=p3;
       elseif(i<2000)
           p2=nm1(i:i+499,:);
           out1(i:i+499,:)=p2;              
       else  
           p1=nm1(i:i+499,:);
            for k=1:1:length(p1)
                  out(k,1)=(p1(k)+p2(k)+p3(k)+p4(k)+p5(k))/5;  
            end; 
            p5=p4;
            p4=p3;
            p3=p2; 
            p2=out;
        out1(i:i+499,:)=out; 
        end;             
   end;
   plot(out1);hold on;plot(nm1,'-r');

The result after averaging is shown below with red showing averaged signal and blue showing input signal.But I think the averaging is not done properly.

can someone explain how to make a better moving average as mentioned above and the file is attached.