Talk:Causal filter

This could be explained in much simpler words with no loss of information. Needs a layman's introduction at least. — Omegatron 23:04, 2 December 2005 (UTC)

Example needs correction

The example given, which should be relatively straightforward, is needlessly confusing. Why present the output for the causal system in terms of f(t-1) rather than f(t)? In fact, this is incorrect. It should read “A realizable output is

$f(t)=\int _{-2}^{0}s(t+\tau )\,d\tau =\int _{0}^{+2}s(t-\tau )\,d\tau \,$

which is a delayed version of the non-realizable output." Lacshoet (talk) 13:44, 25 May 2026 (UTC)