作者lxy351 (kklin)
看板Electronics
标题[问题] 讯号与系统
时间Sun Mar 13 23:06:58 2011
Consider the system that generates the output signal y[n] = 2(u[n - 3]- u[n -
5])
if the input signal is x[n] =d [n -1]+d [n - 2] . Please determine (with
logical
explanations) whether the system is invertible, casual, stable, time
invariant, and
linear, where d [n] and u[n] are discrete-time signals representing,
respectively,
the unit impulse and the unit step.
想要请问这题h(n) 没给我 该怎麽解? 还是可以靠以知Y跟X解出H?
--
※ 发信站: 批踢踢实业坊(ptt.cc)
◆ From: 140.112.211.41
1F：→ kameng:h[n]只在LTI SYSTEM 才有的记号, 如果一个SYS不是LTI,给 03/13 23:15
2F：→ kameng:h[n]你也没有意义 03/13 23:15
3F：→ lxy351:1恩恩 感谢回答 所以这样就是直接讨论y跟x有没有以下性质? 03/13 23:32
4F：推 Ertkkpoo:h[n]不是指discrete-time下的讯号吗?一定要LTI? 03/14 00:04
5F：推 jamtu:直接用课本上对於这些名词的定义去做就好了 03/14 00:25
6F：→ mp19990920:y[n]是u[n]的组合,跟x[n]无关,直接用定义来讨论即可 03/14 03:21
7F：推 acmonkey:y作z转换 x作z转换 除一下h就出来了 03/14 13:54