ModFX
These are the ModFX available in Zebra2:
Chorus – a chorus/flanger
Phorus – a chorus/flanger built from allpass delay lines. Feedback has to be turned on.
Phaser – a phaser
Depending on the center value this is either a chorus (25%) or at higher values (75%) a flanger.
Speed controls the speed of the effect (from 0.001Hz to 1 Hz).
Depth controls the delay time modulation (phasing filter frequency modulation) around the center value.
Stereo sets the phase offset of the modulation for the left and right side.
Feedback turns the chorus into a flanger.
Mix sets the amount of the effected signal to be mixed with the dry signal.
The next section is what makes these effects unique.
There are four parameters that deal with EQing:
Low Cut Freq / Boost
Hi Cut Freq / Boost
The signal that’s going through the effect can be limited by HiCut and LowCut EQs. This preserves the stereo imaging of bass frequencies (LowCut) and makes the chorus sound less harsh & digital (HiCut). But it can also be used to create *that certain sound*. The signal attenuation is fixed at -24 dB.
To preserve the high- and low-freq spectrum of the input material, the dry signal is automagically boosted according to the Mix position to automatically compensate for the loss.
As the Dry signal is EQed anyway, there are two Boost parameters. These can additionally EQ the Dry signal +/- 12 dB.
Quad and QuadPhase.
This effect thickens the sound by subtly adding warmth to the signal. Quad is the depth, while QuadPhase controls the tone.
In a certain way, the Quad stage can be thought of as a secondary chorus.