§6,11 Block Diagram Representation In the time domain, the input-output relations of an lti digital filter is given by the convolution sum yn]=∑k=ohk]xn- or, by the linear constant coefficient difference equation y[n]=-ckerdkyvIn-k]+ 2ko pk[n-ki§6.1.1 Block Diagram Representation • In the time domain, the input-output relations of an LTI digital filter is given by the convolution sum   =− = − k y[n] h[k]x[n k]  =  = = − − + − M k k N k k y n d y n k p x n k 1 0 [ ] [ ] [ ] or, by the linear constant coefficient difference equation