信号与系统--卷积图解法
参考资料视频: https://www.youtube.com/watch?v=i1n_euUse1o 需要富强这里我举一个栗子求f1(t)∗f2(t)求f_{1}(t) * f_{2}(t)求f1(t)∗f2(t)f1(t)=2[ε(t)−ε(t−1)]f_{1}(t)=2 [\varepsilon(t)-\varepsilon(t-1)]f1(t)=2[ε(t)−ε(t−...
参考资料视频: https://www.youtube.com/watch?v=i1n_euUse1o 需要富强
这里我举一个栗子
求
f
1
(
t
)
∗
f
2
(
t
)
求f_{1}(t) * f_{2}(t)
求f1(t)∗f2(t)
f
1
(
t
)
=
−
2
[
ε
(
t
)
−
ε
(
t
−
1
)
]
f_{1}(t)=-2 [\varepsilon(t)-\varepsilon(t-1)]
f1(t)=−2[ε(t)−ε(t−1)]
f
2
(
t
)
=
−
[
ε
(
t
)
−
ε
(
t
−
2
)
]
f_{2}(t)=-[\varepsilon(t)-\varepsilon(t-2)]
f2(t)=−[ε(t)−ε(t−2)]
编辑公式有点累 我手写吧 啊哈哈
然后这就是以上解题的过程
准确答案如下
f
1
(
t
)
∗
f
2
(
t
)
=
2
t
ε
(
t
)
−
2
(
t
−
1
)
ε
(
t
−
1
)
−
2
(
t
−
2
)
ε
(
t
−
2
)
+
2
(
t
−
3
)
ε
(
t
−
3
)
\begin{array}{l}{f_{1}(t) * f_{2}(t)=} {2 t \varepsilon(t)-2(t-1) \varepsilon(t-1)-2(t-2) \varepsilon(t-2)+2(t-3) \varepsilon(t-3)}\end{array}
f1(t)∗f2(t)=2tε(t)−2(t−1)ε(t−1)−2(t−2)ε(t−2)+2(t−3)ε(t−3)
完毕
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