Analogue filter

Analogue filter

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.

Given a particular filter specification,Analog filters are typically designed by first selecting the overall number and arrangement of parts (the electronic filter topology) (which determines the "order" of the filter), and then calculating the specific part values (which determines the particular transfer function of that order -- pass band, transition band, stop band, cutoff frequencies, ripple, etc.).

ee also

* Digital filter
* Electronic filter
* Audio filter

External links

* [http://www.analog.com/Wizard/filter/filterUserEntry.asp Analog Wizard Filter - Analog Devices]
* [http://www.circuitsage.com/filter.html Filter Design and Analysis]
* [http://www.maxim-ic.com/appnotes.cfm/appnote_number/1795/CMP/WP-41 Analog Filter Design Demystified]


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