ABSTRACT
Filters of the form of Equation 3.1 are also called nonrecursive, moving average, or all zero (more on that later). Figure 3.4 shows a signal processing block diagram of a general FIR filter. From the discussion of convolution in Section 3.1, note now that an arbitrary (finite length) impulse response can be stored in the coefficients of an FIR filter, and the operation of the filter would then actually perform the convolution. Thus, any LTI system with finite-length
Figure 3.4. A high (Nth) order general FIR digital filter.
