Inner matrix dimensions must agree

I am getting this error: Error using *. Inner matrix dimensions must agree. Can anyone help me solve this??

E(:,i) = filter(1,[1 zeros(1,P-1) -1],zeros(L,1),b*ebuf(F-P+1:F));

Answer 1

[Guillaume]

The only matrix multiplication in your line is

b*ebuf(F-P+1:F)

ebuf(F-P+1:F) is clearly going to be a vector and since you get an error b is clearly not scalar.

My guess is that you meant

b .* ebuf(F-P+1:F)

and learn the difference between array and matrix operations