单选题1分 设置 For a system with the input and output satisfying a linear constant-coefficient difference equation, N ayln-k]=∑bxn-ml k=0 m=0 if the system is specified to be linear,time-invariant and causal,then the output for a given input is: not uniquely specified uniquely specified. 提交 7 10/18/2022 Zhongguo Liu_Biomedical Engineering_Shandong Univ
7 10/18/2022 Zhongguo Liu_Biomedical Engineering_Shandong Univ. For a system with the input and output satisfying a linear constant-coefficient difference equation, if the system is specified to be linear, time-invariant, and causal, then the output for a given input is: not uniquely specified; uniquely specified. A B 提交 = = − = − M m m N k ak y n k b x n m 0 0 单选题 1分
单选题 1分 设置 For a system with the input and output satisfying a linear constant-coefficient difference equation, ∑an-k-之bn-m k=0 m=0 if the system is specified to be linear,time-invariant, and causal,the auxiliary conditions (initia/-rest conditions,初始松弛条件)are needed, they are: if x[nj=0,forn<0,theny n]=0,forn<0. ifx[n=0,forn<,theny[刀=0，orn<. 提交 8 10/18/2022 Zhongguo Liu_Biomedical Engineering_Shandong Univ
8 10/18/2022 Zhongguo Liu_Biomedical Engineering_Shandong Univ. For a system with the input and output satisfying a linear constant-coefficient difference equation, if the system is specified to be linear, time-invariant, and causal, the auxiliary conditions (initial-rest conditions,初始松弛条件) are needed, they are: A B 提交 = = − = − M m m N k ak y n k b x n m 0 0 if x n for n n then y n for n n = = 0 0 , , , . 0 0 if x n for n then y n for n = = 0 0 0 0 , , , . 单选题 1分
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 9
9 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
Chapter 2 Discrete-Time Signals and Systems Review of Chapter 2 2.5 Linear Constant-Coefficient Difference Equations .The output for a given input is not uniquely specfied Auxiliary conditions are required;initial-rest conditions Is the system LTI Example2.l6(第二版) 2.6 Frequency-Domain Representation of Discrete- Time Signals and systems Eigenfunction and Eigenvalue for LTI systems 2.7 Representation of Sequences by Fourier Transforms 2.8 Symmetry Properties of the Fourier Transform 2.9 Fourier Transform Theorems 2.10 Discrete-Time Random Signals 10
10 Chapter 2 Discrete-Time Signals and Systems Review of Chapter 2 ◆2.5 Linear Constant-Coefficient Difference Equations ◆The output for a given input is not uniquely specified. Auxiliary conditions are required; initial-rest conditions ◆2.6 Frequency-Domain Representation of DiscreteTime Signals and systems ◆ Eigenfunction and Eigenvalue for LTI systems ◆2.7 Representation of Sequences by Fourier Transforms ◆2.8 Symmetry Properties of the Fourier Transform ◆2.9 Fourier Transform Theorems ◆2.10 Discrete-Time Random Signals Is the system LTI ? Example 2.16 (第二版)
2.0 Introduction Signal:something conveys information, represented mathematically as functions of one or more independent variables.Classified as: Continuous-time (analog)signals discrete-time signals,digital signals Signal-processing systems are classified along the same lines as signals: Continuous-time (analog)systems, discrete-time systems,digital systems 11 10/18/2022 Zhongguo Liu_Biomedical Engineering_Shandong Univ
11 10/18/2022 Zhongguo Liu_Biomedical Engineering_Shandong Univ. 2.0 Introduction ◆Signal: something conveys information, represented mathematically as functions of one or more independent variables. Classified as: ◆Continuous-time (analog) signals, discrete-time signals, digital signals ◆Signal-processing systems are classified along the same lines as signals: Continuous-time (analog) systems, discrete-time systems, digital systems