Apple Using WaveBurner Logic Pro 7.1 - Manual (Page 36)

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Linear Phase EQ
The Linear Phase EQ offers up to eight bands of equalization and an integrated Fast
Fourier Transform (FFT) analyzer. It features linear-phase filtering, which means that use
of the Linear Phase EQ results in no phase distortion of the audio signal. Linear-phase
filtering does add latency, of about 50 ms.
The parameters for the Linear Phase EQ are similar to those for the Fat EQ. For each
frequency band, you drag the number up or down to raise or lower the band’s
frequency and resonance (“Q”). Instead of a slider to adjust the amount of boost or cut,
you drag the number (expressed in dB, except for the bottom and top bands, where
the low cut and high cut filters are expressed in dB/Octave). You can also drag the
curves in the graphic display to edit them directly.
You can also turn on the Analyzer to view the frequency content of the signal as it
plays. You can set the resolution of the Analyzer by clicking the bottom rectangle
button below the Post-Fader button, then choosing the resolution you want from the
shortcut menu. High resolutions are recommended to achieve reliable results with very
low bass frequencies. The bands derived from FFT analysis are divided in accordance
with the frequency linear principle—meaning that there are many more bands for
higher octaves than for lower ones.
You can reset all parameters by Option-clicking in the display area, or reset individual
parameters by Option-clicking in the parameter area. After boosting or cutting
frequency bands, you can use the Master Gain fader to adjust the Output level.
Use the scales to the left and right of the EQ display to change the vertical scale of the
EQ and analyzer curves.