error curve and conclutions from the error - echo cancellation mini project

hi,im working on this subject ,my main code is lms algorithm,it wrks very well but id like to add a good insite on the error signal?

how can i display it in a plot with conclutions about the bheavior of the error like a function depends on the mu?or the error distirbution function?

here the main job:

for i=1:2680

total_signal(i)=echoed_signal_new(i)+person_2(i)

end

w=zeros(1,length(n))

for i=1:length(n)

y_desired(i)=w(i)'*new_x(i)

e(i)=total_signal(i)-y_desired(i)

if i<250

mu=0.32

if i>=250 && i<=1000

mu=0.22 %%%%starting fast converges and then slowly to get apropriet coefficient

if i>1000

mu=0.07

end

end

end

w(i+1)=w(i)+mu*e(i)*new_x(i) %%%determing coefficients

end

figure(6)

subplot(5,1,1)

plot(n,new_x(n))

title('desired signal')

xlim([0 2680])

subplot(5,1,2)

plot(n,person_2)

title('the interferece

subplot(4,1,2)

semilogy(n,abs(e(n)))

title('error amplitude ')

xlabel('samples')

ylabel('error value')

xlim([0 2680])

subplot(4,1,3)

plot(n,total_signal(n))

title('echoed+ person2 and noise from transmition line and noise room')

xlim([0 2680])

ylim([-2 2])

subplot(4,1,4)

plot(n,y_desired(n))

title(' estimated adaptive output')

xlim([0 2680])

ylim([-2 2])

figure(6)

plot(n,w(n))

title('wieght function')

xlim([0 2680])

can someone help?