Chapter 7 Sampling §712 Natural Sampling P()= ∑ P(-n7) Hlo 1/4 n=-00 P Hla 0 OM<OC<Os=OM +0 x()={x()∑P(=nm)*6() 6
6 §7.1.2 Natural Sampling Chapter 7 Sampling x (t) p x t r ( ) x(t) ( ) ( ) n p t P t nT + =− = − H(j) M c s − M 0 0 1/ a −c H(j) c r ( ) ( ) ( ) ( ) n x t x t P t nT h t + =− = −
Chapter 7 Sampling 57. 1.3 Sampling with a Zero-Order Hold x( Zero-Order xo(O Hold x() x(7)x(27) -3T-2T-T0T 2T 3T. 4T 7
7 Chapter 7 Sampling §7.1.3 Sampling with a Zero-Order Hold x(t) Zero-Order Hold x(t) x (t) 0 x(0) x(T) x(2T) -3T -2T -T 0 T 2T 3T 4T t x t( ) ( ) p x t