Instruments and Effects

90 Chapter 5 EQ
Linear Phase EQ
The high-quality Linear Phase EQ effect is similar in appearance to the Channel EQ,
sharing the same parameters and eight-band layout. However, the Linear Phase EQ
uses a different underlying technology, which preserves the phase of the audio signal
100%—even when you apply the wildest EQ curves to the sharpest signal transients!
The Linear Phase EQ uses more CPU resources than the Channel EQ, and introduces
greater amounts of latency. For this reason, it is strongly recommended that you use it
for mastering previously recorded audio—and don’t use it when playing software
instruments live, for example. The latency compensation feature in Logic Pro can be
helpful when using this effect as well.
Linear Phase EQ Parameters
The parameters of the Linear EQ are identical to the Channel EQ. For information on
the Channel EQ parameters, see “Channel EQ Parameters” on page 85.
Using the Linear Phase EQ
In operation, the Linear Phase EQ is similar to the Channel EQ. For more information,
refer to “Channel EQ” on page 84. Because the parameters of the Channel EQ and
Linear Phase EQ are almost identical, you may freely copy settings between them. In
Logic Pro, if you replace a Channel EQ with a Linear Phase EQ on the same slot (or vice
versa), the settings are transferred to the new EQ.
One difference, however, is that the Linear Phase EQ uses a set amount of your
computer’s CPU resources, regardless of how many bands are active.