![]() ![]() Graphic equalizers provide a very intuitive way to work - separate slider controls for different frequencies are laid out in a way which represents the frequency spectrum. The specified point is affected the most, frequencies further from the point are affected less. Bell EQīell equalization boosts or attenuates a range of frequencies centred around a certain point. This creates a "shelf" in the frequency spectrum. In shelving equalization, all frequencies above or below a certain point are boosted or attenuated the same amount. There are several common types of equalization, described below. ![]() Equalization can also be used for applications such as making sounds more intelligible and reducing feedback. For example, if a sound was recorded in a room which accentuates high frequencies, an equalizer can reduce those frequencies to a more normal level. The key is to be able to adjust a narrower range of frequencies without affecting neighbouring frequencies.Įqualization is most commonly used to correct signals which sound unnatural. This is adequate for very rudimentary adjustments - it only provides two controls for the entire frequency spectrum, so each control adjusts a fairly wide range of frequencies.Īdvanced equalization systems provide a fine level of frequency control. The treble control adjusts high frequencies, the bass control adjusts low frequencies. The most basic type of equalization familiar to most people is the treble/bass control on home audio equipment. Equalization, or EQ for short, means boosting or reducing (attenuating) the levels of different frequencies in a signal. ![]()
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