matlab code for finding MSE and PSNR between two audio signals

I want matlab code for MSE and PSNR between two audio signals..please help me..

Answer 1

[Shivaputra Narke]

Hope this helps.....

[R C]=size(signal1); err = (((signal1-signal2).^2)/(R*C)); % size of signals must be same length MSE=sqrt(err); PSNR = 20*log10(MAXVAL/MSE); % MAXVAL= 255 in case of 8 bit signal

[ayesha jabeen]

i am getting this error while calculating MSE

[iqbal maulana]

size of y1 and y2 is not same

[Sheikh Thanbir Alam]

But Max value for image is 255?? So, shoud we use 255 in audio signal???