Editing Analog signal processing (section)

'''Analog signal processing''' is a type of [[signal processing]] conducted on [[Continuous function|continuous]] [[analog signal]]s by some analog means (as opposed to the discrete [[digital signal processing]] where the [[signal processing]] is carried out by a digital process). "Analog" indicates something that is mathematically represented as a set of continuous values. This differs from "digital" which uses a series of discrete quantities to represent signal. Analog values are typically represented as a [[voltage]], [[electric current]], or [[electric charge]] around components in the electronic devices. An error or noise affecting such physical quantities will result in a corresponding error in the signals represented by such physical quantities.

Examples of ''analog signal processing'' include crossover filters in loudspeakers, "bass", "treble" and "volume" controls on stereos, and "tint" controls on TVs. Common analog processing elements include capacitors, resistors and inductors (as the passive elements) and [[transistor]]s or [[Operational amplifier|op-amp]]s (as the active elements).