ABSTRACT
The equalizer-often shortened to EQ-is the most common type of frequency processor.
An equalizer can take many forms, from as simple as the bass and treble knobs on your
home or car stereo to multiband and parametric EQ sections on a mixing console or a
graphic equalizer in a PA system. Equalizers were first developed for use with telephone
systems to help counter high-frequency losses due to the inherent capacitance of very long
wires. Today, EQ is an important tool that’s used to solve many specific problems,
as well as being a key ingredient in a mix engineer’s creative palette.
