Dictionary of Electrical Engineering

Commonly used terms in the Electrical industry.

filtering
(1) an estimation procedure in which the present value of the state vector (see the definition) is estimated based on the data available up to the present time.

(2) the process of eliminating object, signal or image components which do not match up to some pre-specified criterion, as in the case of removing specific types of noise from signals. More generally, the application of an
operator (typically a linear convolution) to a signal.