Difference between revisions 426406187 and 426425487 on enwiki

{{Merge from |Blind equalization |discuss=Talk:Equalization#Merge parametric and blind equalization into equalization article|date=September 2010}}

{{About|frequency-dependent processing of signals}}

'''Equalization''', (British: '''equalisation''') is the process of adjusting the balance between [[frequency]] components within an electronic [[Signal (electronics)|signal]]. The most well known use of equalization is in [[sound recording and reproduction]] but there are many other applications in electronics and telecommunications. The circuit or equipment used to achieve equalization is called an equalizer.  These devices strengthen (''boost'') or weaken (''cut'') the energy of specific frequency [[Frequency range|bands]]. 

In telecommunications equalizers are used to render the [[frequency response]]—for instance of a telephone line—''flat'' from end-to-end. When a [[communication channel|channel]] has been "equalized" it is athe [[frequency domain]] attributes iof the channel wasn't even there: the output of the systemsignal at the input are faithfully reproducesd at the inoutput. Telephones, [[DSL]] lines and television cables use equalizers to prepare data signals for transmission.

In the field of audio electronics, the term "equalization" has come to include the adjustment of frequency responses for practical or aesthetic reasons, often resulting in a net response that is not truly equalized.  The term EQ specifically refers to this variant of the term.<ref>Ballou, pp.875-876.</ref> Stereos typically have adjustable equalizers which boost or cut [[Bass (contracted; show full)[[pl:Korektor (akustyka)]]
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