Apple Logic Express 7 - Manual (Page 42)

42 Chapter 5 Distortion
Phase Distortion
The Phase Distortion plug-in is based on a modulated delay line, much like the well-
known chorus or flanger effects. As opposed to these, the delay time is not modulated
by a low frequency oscillator (LFO), but rather by a lowpass-filtered version of the audio
input signal itself. This is how the signal modulates its own phase position.
In the signal flow of this effect, the parameters do the following:
The input signal only passes the delay line and is not affected by any other process. Mix
blends the effected signal with the original signal. The delay time is modulated by a
Side Chain signal—namely, the input signal. The input signal passes through a resonant
lowpass filter, the Cutoff frequency and Resonance of which can be set with dedicated
controls. You also can listen to the filtered Side Chain (instead of the Mix signal), if you
engage Monitor. The maximum delay time is set with Max Modulation. The amount of
modulation itself is controlled with Intensity.
In you active the 001/011 button, the Phase Reverse parameter will be shown. It is only
valid for the stereophonic version of the effect. Normally, a positive input value results
in a longer delay time. If you engage Phase Reverse (On), positive input values result in a
reduction of the delay time on the right channel only.