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I happened to be studying for a
Signals & Systems exam, and I noticed this article was a bit hard to understand. So, I went ahead and tried to make the first paragraph a bit clearer, but I don't have the time to make the mathematical notation clearer. I hope there is someone out there that can
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The article lists: y \left( t \right) =x(-t) as an example of an anticausal system...this is only true is t<0. For instance, let t=1. Then the value of the output signal at t=1, y(1), is determined uniquely by the input signal at time t=-1, i.e. x(-1). This is clearly causal.
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y(n)= y(n-1)+ x(n) seems also causal, nevertheless the definition does not include such a case. Can we make a solid statement on that? (My textbook could not clarify it either.)
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the only thing I can think of is a digital filter that because of delays, gets hi-frequency information before the pulse 'hits'. PLEASE talk about this.
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This article could do well with a basic example to illustrate the concept more clearly. A graph and a few equations would go a long way.
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on
Knowledge. If you would like to participate, please visit the project page, where you can join
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It should be explained, that in this paragraph two definitions of causality are shown.
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Nutshell: Someone with math notation skills, please clean this article up.
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Should the first mathematical definition include a "for every
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Is there any difference between causal and memory systems?
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557:in order for the system to be causal, right?
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