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Equalizers overview
An equalizer (commonly abbreviated as EQ) shapes the sound of incoming audio by changing
the level of specic frequency bands.
Equalization is one of the most-used audio processes, both for music projects and in post-
production work for video. You can use EQ to subtly or signicantly shape the sound of an
audio le, an instrument, a vocal performance, or a project by adjusting specic frequencies or
frequency ranges.
All EQs are specialized lters that allow certain frequencies to pass through unchanged while
raising (boosting) or lowering (cutting) the level of other frequencies. Some EQs can be used
in a “broad-brush” fashion, to boost or cut a large range of frequencies. Other EQs, particularly
parametric and multiband EQs, can be used for more precise control.
The simplest types of EQs are single-band EQs, which include low cut and high cut, lowpass and
highpass, shelving, and parametric EQs.
Multiband EQs (such as Channel EQ or Linear Phase EQ) combine several lters in one unit,
enabling you to control a large part of the frequency spectrum. Multiband EQs allow you to
independently set the frequency, bandwidth, and Q factor of each frequency spectrum band.
This provides extensive and precise tone-shaping of any audio source, be it an individual audio
signal or an entire mix.
Channel EQ
Channel EQ overview
Channel EQ is a versatile multiband EQ. It provides eight frequency bands, including lowpass and
highpass lters, low and high shelving lters, and four exible parametric bands. It also features
an integrated Fast Fourier Transform (FFT) Analyzer that shows changes to the frequency curve
of the audio signal in real time, allowing you to see which parts of the frequency spectrum may
need adjustment.
You can use Channel EQ to shape the sound of individual tracks or audio les or for tone-shaping
on an overall project mix. The Analyzer and graphic display’s controls make it easy to view and
change the audio signal in real time.
Tip: The parameters of Channel EQ and Linear Phase EQ are identical, enabling you to freely
copy settings between them. In Logic Pro X, if you replace a Channel EQ with a Linear Phase EQ
(or vice versa) in the same Insert slot, the current settings are automatically transferred to the
new EQ.
Equalizers
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