Equalization
Equalization, which is often shortened to EQ, is the method of increasing or decreasing the frequencies of a signal. Equalization is performed through a device called an equalizer. The equalizer can be as simple as a treble/bass adjustment on a home stereo or encompass a much larger scale of frequencies. Equalization is used to fine tune specific frequencies without changing other frequencies within the signal. The following terms are forms of equalization:
- Graphic EQ- This type of equalizer represents the range of frequencies with a slider control for each frequency. The more slider controls, the more manipulation possible.
- Shelving EQ- This element of equalization produces a “shelf” in the range of frequencies by altering the frequencies below and above a designated point at the same amount.
- Parametric EQ- This equalizer uses the same technique as Bell EQ, but it is able to choose a specific frequency to manipulate.
- Bell EQ- Here, equalization is carried out by designating a specific point on the frequency spectrum and either boosting or reducing the frequencies around that point. This means that the point is most changed and the frequencies farther away are minimally altered.
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