Difference Equation

We first write the comb filter specification in a more ``mathematical'' form as a digital filter difference equation:

$\displaystyle y(n) = x(n) + g_1\, x(n-M_1) - g_2\, y(n-M_2), \protect$

(4.1)

where

denotes the

th sample of the input signal,

is the output at time

, and

and

denote the feedforward and feedback coefficients, respectively. The signal flow graph is shown in Fig.3.1.

Next Section:
Signal Flow Graph
Previous Section:
Elementary Matlab Problems

Sign in