1. Lecture 21 Chapter 7: Introduction to z-Transforms
Spring, 2009

2. Today's lecture Introduction to Z-Transforms n- Domain and z- Domain
Definition of z-Transform

3. Transform Concepts
Sedtion H,j

4. Introduction to Z-Transform

5. Two ( no, Three ) Domains
Section G

6. Definition of the z-Transform
x[n] = ∑ x[k] δ[n- k]
X[z] = ∑ x[k] z -k
X[z] = ∑ x[k] (z -1)k
x[n]  X[z] N
K=0 N
K=0 N
K=0 z

7. “Transform” Example

8. Z-Transform Idea

9. Z-Transform Definition

10. Z-Transform Example

12. Z-Transform of FIR Filter

13. Z-Transform of FIR Filter

14. Example Delay System