??? Error using ==> mldivide Matrix dimensions must agree.

hy everyone can help me to fix my problem ??

Error in ==> masukan at 18 c = sqrt(sum(s.^2)/sum(b_in.^2));

function [y,b,b_in,s,Fs] = masukan (SNR)

%Masukan sinyal suara dan sinyal derau

[s,Fs] = wavread('suara.wav');

%n =length(s);

b_in = wavread('derau_angin.wav');

%Menghitung faktor normal SNR

c = sqrt(sum(s.^2)./sum(b_in.^2));

b = c * 10^(SNR./20) * b_in;

%Sinyal suara dan derau

y = s + b;

end

thanks for your help

[iqball]

ok.. thanks for your help :)

[Star Strider]

The error refers to:

c = sqrt(sum(s.^2)/sum(b_in.^2));

You vectorised it in the code you posted:

c = sqrt(sum(s.^2)./sum(b_in.^2));

so I assume matrix division is not the problem, and array sizes are. However, this would be rdivide or mrdivide, so I have no idea what the actual error is.

That aside, apparently, ‘suara.wav’ and ‘derau_angin.wav’ are different lengths (row sizes).

Only you can solve that problem.

[iqball]

thanks star strider for your help :)

[Star Strider]

My pleasure.