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Effects and Effect Mode
Effects Overview
Polydistort
This is a more complex distortion effect that provides two, four, or six stages of distortion.
Curve
n
controls the curvature of the individual distortion stages. 0% is no curvature (no
distortion at all). At 100%, the curve bends over smoothly and becomes perfectly flat right before
it goes into clipping. Maximum value is 127%.
LP
n
Freq
are shelving frequencies for one-pole lowpass filters on each of the distortion stages.
LP0 Freq handles the initial low pass prior to the first distortion stage. The other low pass
controls follow their respective distortion stages. Range is 16 to 25088 Hz.
Rotating Speakers
An effect that includes Rotating Speakers breaks the signal into two frequency bands, “rotates”
each band separately through a virtual speaker, and then combines the outputs with a pair of
virtual “microphones” whose angle relative to the speakers is adjustable. A number of very
sophisticated parameters have been included in the Rotating Speakers effect, to give the effect a
great degree of realism. Because of the complexity of the effects, you might want to approach any
parameters that seem a little obscure to you with caution.
Roto InOut
engages or bypasses the rotary speaker effect.
There are four virtual microphones, with two each on the woofer (
LoMic A
and
LoMic B
) and on
the tweeter (
HiMic A
and
HiMic B
). Each microphone has:
Pos
(position), the angle of the microphone from the front of the virtual speaker, from -180 to 180
degrees;
Lvl
(level) from 0 to 100%; and
Pan
, the left/right panning of the microphone’s output, from -100% (full left) to 100% (full right).
Other parameters:
Lo Beam W
and
Hi Beam W
set the acoustic radiation patterns (“beam width”) of the two drivers
in the rotating speaker. If you imagine looking down on the rotating speaker, this is the angle
between the -6 dB levels of the beam. The range is from 45° to 360°. At 360°, the driver is
omnidirectional.
Xover
(Crossover) is the frequency at which high and low frequency bands are split and sent to
separate rotating drivers. The range is 16 to 25088 Hz.
Lo Gain
and
Hi Gain
are the gains of the signal passing through the rotating woofer or tweeter,
respectively. The range is Off/-79.0 to 24.0 dB.
Lo Size
and
Hi Size
are the effective sizes (radius of rotation) of the rotating speakers in
millimeters. This affects the amount of Doppler shift or vibrato of the low frequency signal. The
range is 0 to 250 mm.
Lo Trem
and
Hi Trem
control the depth of tremolo (amplitude modulation) of the signals. It is
expressed as a percentage of full scale tremolo. The range is 0 to 100%.
LoResonate
and
HiResonate
are simulations of cabinet resonant modes expressed as a
percentage. For realism, you should use very low settings. The range is 0 to 100%.
Lo Res Dly
and
Hi Res Dly
are the number of samples of delay in each resonator circuit in
addition to the rotation excursion delay. The range is 10 to 2550 samples.