作者fonlintw0621 (fonlintw0621)
看板Grad-ProbAsk
标题[理工] [线性系统]
时间Sun Nov 22 16:45:58 2009
The impulse reponse of an ideal lowpass filter is given by
sin2w(t-t0)
g(t) = 2w --------------------
2w(t-t0)
for all t , where w and t0 are constant.
Is the ideal lowpass filter causal ?
Is it possible to build the filter in the real world ?
没有头绪 有请高手。
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1F：推 ketsu1109:并非causal (在t<0时,g(t)不一定为0) 11/22 18:06