6.23 Shown in Figure 6.23 is for a lowpass filter. Determine and sketch the impulse response of the filter for each of the following phase characteristics:

1. is absolutely summable, 2. has finite energy

2.1 Discrete-time LTI Systems : The Convolution Sum （卷积和） 2.1.1 The Representation of Discrete-Time Signals in Terms of impulses

1. Continuous-time system 2. Discrete-time system

Chapter 1 Signals and Systems (1) A simple RC circuit Source voltage Vs and Capacitor voltage Vc (2) An automobile

4.3 4.4 4.10 4.11 4.14 4.15 4.24 4.25 4.32 4.35 4.36 4.37 4.43

作业： 1.14 1.15 1.16 1.17 1.21 (d) (e) (f) 1.22 (d) (g) 1.23 1.24 (a) (b) 1.26 (a) (b) 1.27 1.31

四川大学：机械工程系课程教学资源《工程测试技术与信息处理》教学大纲 Engineering Measurement and Signal Analysis

北京信息科技大学：《基础工业工程》课程教学资源（实验指导）实验指导书

北京信息科技大学：《机械控制工程实验》课程教学资源（实验指导）实验指导书