had a trouble in the following program

 x=55125;
 y=54900;
 function[ABSE,MSE,RMSE,SNR]=objectiveanalysis(x,y)
 L=length(x);
y=y(1:L);
ABSE=sum(abs(x-y));
MSE=(sum(((x-y).^2))).*(1/L);
RMSE=MSE.^.5;
nem=sum((x).^2);
den=sum(((x-y).^2));
SNR1=nem./den;
SNR=10*log10(SNR1);
fprintf ('Absolute Error            : %g\n\n',ABSE);
fprintf ('Mean Square Error         : %g\n\n',MSE);
fprintf ('Root Mean Square Error    : %g\n\n',RMSE);
fprintf ('Signal to Noise Ratio     : %g\n\n',SNR);

note... actuly x is my speech signal and its length is i define same y is my encoded speech and its length i defined

[Image Analyst]

You forgot to describe the trouble. What's going wrong?

Answer 1

[Mischa Kim]

The first two lines of your code (assigning values to x and y) you should execute in the MATLAB command window. Only the code including and following the function definition should be in the function file (named objectiveanalysis.m).

Answer 2

[Image Analyst]

Or, have it all in a single m-file called test (if you want to do it that way, in a single m-file):

function test
x=55125;
y=54900;
[ABSE,MSE,RMSE,SNR]=objectiveanalysis(x,y)

function[ABSE,MSE,RMSE,SNR]=objectiveanalysis(x,y)
L=length(x);
y=y(1:L);
ABSE=sum(abs(x-y));
MSE=(sum(((x-y).^2))).*(1/L);
RMSE=MSE.^.5;
nem=sum((x).^2);
den=sum(((x-y).^2));
SNR1=nem./den;
SNR=10*log10(SNR1);
fprintf ('Absolute Error            : %g\n\n',ABSE);
fprintf ('Mean Square Error         : %g\n\n',MSE);
fprintf ('Root Mean Square Error    : %g\n\n',RMSE);
fprintf ('Signal to Noise Ratio     : %g\n\n',SNR);