3.1 3.13 3.15 3.34 3.35

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

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

软件工程基础 数据库设计基础 数据结构与算法 程序设计基础 多媒体技术简介

Let be a band-limited signal with then is uniquely determined by its samples if where

9.1 The Laplace Transform 1. The relationship 2. Region of Convergence（收敛域）

6.1 The Magnitude-Phase Representation （ 幅度-相位） of the Fourier Transform

4.1 Representation of Aperiodic Signals :The Continuous-Time Fourier Transform

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

1. is absolutely summable, 2. has finite energy