Definition:Filtering Function

Definition
The filtering function is the real function $\operatorname {sinc}: \R \to \R$ defined as:


 * $\forall x \in \R: \map {\operatorname {sinc} } x := \dfrac {\sin \pi x} {\pi x}$

where $\sin$ denotes the (real) sine function.

Also known as
The filtering function is also known as the interpolating function.