An analogue filter handles analogue signals or continuous-time signals, whether electric potential, sound waves, or mechanical motion directly. This is opposed to a digital filter that operates on discrete-time signals.

The design of mechanical or acoustic filters is based on similar principles to electronic linear filters.

See also

• Digital filter
• Electronic filter
• Audio filter

External Links

• Analog Wizard™ Filter - Analog Devices
• Filter Design and Analysis

Filter theory