i am trying a code on speech recognition

clc;

close all;

clear all;

figure(2)

fs=44100;

[y, fs]=audioread('oil.wav'); % Read wave file

%sound(y, fs); % Playback

left=y(:,1); % Left channel

right=y(:,2); % Right channel

subplot(3,1,1),

h=((1:length(left))/fs);

plot(h,left)

subplot(3,1,2),

h1=((1:length(right))/fs);

plot(h1,right)

h3=[h h1];

subplot(3,1,3)

plot(h3)

figure(3)

recObj = audiorecorder

disp('Start speaking.')

recordblocking(recObj, 3);

disp('End of Recording.');

y10 = getaudiodata(recObj);

left1=y10(:,1); % Left channel

right1=y10(:,2); % Right channel

subplot(4,1,1),

h2=((1:length(left1))/fs);

plot(h2,left1)

subplot(4,1,2),

h4=((1:length(right1))/fs);

plot(h4,right1)

h5=[h2 h4];

subplot(4,1,3)

plot(h5)

sound(y10)

figure(4)

z=xcorr(h3,h5)

plot(z)

if (h5<=z)

disp('oil')

else

disp('wrong')

end

i am trying to recognize a word oil and the error is Index exceeds matrix dimensions.

kindly help me if any already have real time speech recognition code thanx in advance.