(New page: == Causal System Definition == A causal system is one whose output at some current time <math>t</math> only depends on some input, <math>x(t)</math>, at the current <math>t</math> or a <ma...) |
|||
(3 intermediate revisions by the same user not shown) | |||
Line 1: | Line 1: | ||
== Causal System Definition == | == Causal System Definition == | ||
− | A causal system is one whose output at some current time <math> | + | A causal system is one whose output at some current time <math>t_0</math> only depends on some input, <math>x(t)</math>, at the current <math>t_0</math> or a <math>t</math> in the past, never from <math>x(t)</math> at a future <math>t</math>. |
− | + | ||
== Non-Causal System Definition == | == Non-Causal System Definition == | ||
− | A non-causal system is one whose output at some time <math> | + | A non-causal system is one whose output at some time <math>t_0</math> depends on future inputs as well as possibly past or current inputs. |
+ | |||
+ | EDIT: Added <math>t_0</math> per discussion suggestions. |
Latest revision as of 10:26, 17 September 2008
Causal System Definition
A causal system is one whose output at some current time $ t_0 $ only depends on some input, $ x(t) $, at the current $ t_0 $ or a $ t $ in the past, never from $ x(t) $ at a future $ t $.
Non-Causal System Definition
A non-causal system is one whose output at some time $ t_0 $ depends on future inputs as well as possibly past or current inputs.
EDIT: Added $ t_0 $ per discussion suggestions.