Substitute following equation in the code below

function con=L1(x,Fs)

Delta=1/Fs

D=floor(32/10);

h1=zeros(1,D);

h2=ones(1,2*D);

h3=zeros(1,32-3*D);

h= [h1 h2 h3];

framesize=length(x);

persistent buffer;

if isempty(buffer)

buffer = zeros(1,framesize+length(h));

end

buffer = [buffer(:,end-length(h)+1:end) x];

con=Delta*conv(buffer,h);

con = con(length(h)+1:length(h)+frameSize);

y[n] = x[n] + 0.7x[n 64]