Chapter 2 Discrete-Time Signals and Systems Review of Chapter 2 2.1 Discrete-Time Signals:Sequences High and Low Frequencies in Discrete-time signal 2.2 Discrete-Time Systems Memoryless (memory);Linear;Time-Invariant; Causality;Stability(BIBO) 2.3 Linear Time-Invariant (LTI)Systems ◆LTI Systems:Convolution(yn=g[n][n]系统适用吗？) 2.4 Properties of LTI Systems Stability and Causality of LTI systems;FIR and IIR systems; Impulse response of LTI systems; Inverse system 99 Chapter 2 Discrete-Time Signals and Systems Review of Chapter 2 ◆2.1 Discrete-Time Signals: Sequences ◆High and Low Frequencies in Discrete-time signal ◆2.2 Discrete-Time Systems ◆Memoryless (memory); Linear; Time-Invariant; Causality; Stability(BIBO) ◆2.3 Linear Time-Invariant (LTI) Systems ◆LTI Systems:Convolution( 系统适用吗?) ◆2.4 Properties of LTI Systems ◆Stability and Causality of LTI systems;FIR and IIR systems; y n g n x n   = [ ] [ ] Impulse response of LTI systems; Inverse system