Behringer Blue Devil GX112 - Phaser; Chorus

15
BLUE DEVIL GX112
Preset-Nr. Effect Variation PARAMETER EFFECT A EFFECT B
21 min. Feedback Delay Time R Mix L Mix R
22 Delay Time R Mix L Mix R
23 Delay Time R Mix L Mix R
24 max. Feedback Delay Time R Mix L Mix R
25 - Delay Time Feddback Mix
26 - Delay Time Feedback Mix
27 - Delay Time Feedback Mix
28 - Delay Time Feedback Mix
29 - Delay Time Feedback Mix
DELAY
(stereo)
DELAY
(long mono)
Tab. 3.6: Parameters of effects 21 through 29
The LFO speed of all modulation effects is controlled by the PARAMETER control. EFFECT A controls the
effect intensity or depth. High values produce a very intensive effect. In the case of the tremolo algorithm,
EFFECT A adjusts the panning between left and right, and vice versa.
+ In the stereo modulation effects (programs 36/37, 50/51, 62/63), the left and right channels are
modulated in reverse phase, which can partly eliminate the effect when reproduced in mono. In
particular, the tremolo will be inaudible if high stereo panning values are used in mono via the built-
in speaker. In this case, it will be better to use no panning at all (EFFECT A = 0).
30-33 Phaser: From a technical point of view, phasing is a modulation effect producing a multi-stage phase
shift between direct and effect signals. As the frequency-dependent phase shift is controlled by an
LFO (low-frequency oscillator), the various frequency ranges of the signal are raised or lowered in
their amplitudes. Depending on the setting you choose, the resulting phasing effect is either slightly
modulating in character or produces heavy sound coloration reminiscent of a constantly modulated
filter.
Preset-Nr. Effect Variation PARAMETER EFFECT A EFFECT B
30 fat LFO Speed Depth Mix
31 slow LFO Speed Depth Mix
32 fast LFO Speed Depth Mix
33 ultra LFO Speed Depth Mix
PHASER
Tab. 3.7: Parameters of effects 30 through 33
34-37 Chorus: Imagine a string quartet, with each musician playing the same notes. As a matter of fact, no
musician is able to play with an intonation accuracy of 100%. Consequently, slightly detuned signal
portions are produced which overlap in the time domain. To emulate this effect, chorusing uses copies
of the original signal, which are then delayed by 20 - 40 msec, detuned slightly and modulated by the
LFO. The result is a detune effect that is very pleasant in character. As this effect is used so frequently
and in such a variety of signal-widening applications, any recommendation given here would mean a
restriction of its uses.
Preset-Nr. Effect Variation PARAMETER EFFECT A EFFECT B
34 fat LFO Speed Depth Mix
35 slow LFO Speed Depth Mix
36 stereo LFO Speed Depth Mix
37 stereo LFO Speed Depth Mix
CHORUS
Tab. 3.8: Parameters of effects 34 through 37
3. EFFECTS PROCESSOR