Next  |  Prev  |  Up  |  Top  |  Index  |  JOS Index  |  JOS Pubs  |  JOS Home  |  Search


Direct-Form-I Implementation

The difference equation (Eq.(5.1)) is often used as the recipe for numerical implementation in software or hardware. As such, it specifies the direct-form I (DF-I) implementation of a digital filter, one of four direct-form structures to choose from. The DF-I signal flow graph for the second-order case is shown in Fig.5.1a. The direct-form II structure, another common choice, is depicted in Fig.5.1b. The other two direct forms are obtained by transposing direct forms I and II. Chapter 9 discusses all four direct-form structures.


Next  |  Prev  |  Up  |  Top  |  Index  |  JOS Index  |  JOS Pubs  |  JOS Home  |  Search

[How to cite this work]  [Order a printed hardcopy]  [Comment on this page via email]

``Introduction to Digital Filters with Audio Applications'', by Julius O. Smith III, (September 2007 Edition)
Copyright © 2024-09-03 by Julius O. Smith III
Center for Computer Research in Music and Acoustics (CCRMA),   Stanford University
CCRMA