Ch2.1Introduction
Topics:
• TheConvolutionSumandTheConvolutionIntegral
卷积和与卷积积分
• InterconnectionsofLTIsystem系统的互联
• Relations between LTI system properties and the
impulseresponseLTI系统的特性与冲激响应的关系
• SolvingtheresponseoftheLTIsystem
LTI系统响应的求解
• BlockDiagramRepresentationsLTI系统的方框图表示
• State-VariableDescriptionsofLTIsystem系统的状态
变量描述
Ch2.2TheConvolutionSum(卷积和)
任意离散信号x[n]可以表示为时移的脉冲序列的加权叠加。
Graphical example
illustrating the representation
of a signal x[n] as a weighted
sum of time-shifted impulses.
Definition:
Impulseresponse(冲激响应)
Impulse Response: The Output of a LTI system
due to a unit impulse signal input applied at time
t=0 or n=0.
LTI系统对 t=0 或 n=0 时刻的输入单位冲激信号
或单位脉冲信号的响应。记为h(t)或h[n] 。