19
Phaser
A phaser splits the incoming signal, and then changes the phasing of the signal. This signal is then
taken in and out of phase and mixed back in with the original signal. As the phasing changes, dif-
ferent frequencies get canceled resulting in a warm sort of twisting sound. The BP355 includes
the following Phaser models:
phaser
(the DigiTech Phaser),
tphase
(the DigiTech Triggered
Phaser),
mxphas
(based on an MXR Phase 100), and
ehphas
(based on an Electro-Harmonix
Small Stone).
Knobs 2-6 have the following functions for the various Phaser models:
Phaser
Model
Knob 2
(Pre/Post
Amp)
Knob 3
(Speed)
Knob 4
(Depth)
Knob 5
(Regenera-
tion)
Knob 6
(FX Level)
Phaser
Pre/Post Amp
Speed
Depth
Regen
Level
tphase
Pre/Post Amp
Speed
Sensitivity
LFO Start
Level
mxphas
Pre/Post Amp
Speed
Intensity
--
--
ehphas
Pre/Post Amp
Rate
--
Color
--
Vibrato (
viBRaT
)
The DigiTech Vibrato effect modulates the pitch of the incoming signal at an even rate.
Pre/Post Amp - Knob 2 determines where the effect appears in the effects chain. Turn
counter-clockwise for Pre (appears before the Distortion effect), or clockwise for Post
(appears after the Noise Gate effect).
Speed - Knob 3 adjusts the rate (Speed) at which the pitch modulates. Ranges from
0
to
99
.
Depth - Knob 4 adjusts the intensity (Depth) of the modulating pitch. Ranges from
0
to
99
.
Rotary Speaker (
ROTARY
)
The Rotary Speaker emulates a device that included a spinning horn and woofer. The rotation of
these two speakers produced an interesting combination of the sound panning from side to side.
This produced a slight pitch change due to the speed of the sound coming towards, and then
going away from the listener.
Pre/Post Amp - Knob 2 determines where the effect appears in the effects chain. Turn
counter-clockwise for Pre (appears before the Distortion effect), or clockwise for Post
(appears after the Noise Gate effect).
Speed - Knob 3 adjusts the rate (Speed) of the spinning speakers. Ranges from
0
to
99
.
Intensity - Knob 4 controls the intensity of the effect. Ranges from
0
to
99
.
Doppler - Knob 5 controls the Pitch Shift effect that is the ratio between the horn and
the rotor positions. Ranges from
0
to
99
.
X-Over - Knob 6 sets the crossover frequency between the rotor and the horn. Ranges
from
0
to
99
.
