RFX-32 Plug-ins
5
RFX-32
RFX Flanger
Left and right channels can use dual inverted sweeps to generate spatial
modulation and stereo flanging effects. Feedback amount can be set up to
100% without loss of stability and can also be controlled by external MIDI/
synth modulation.
A flange multiplier factor can be used to tune the intensity of the effect
independent of the feedback level, and a selection of flange cancellation
modes are available that lend a variety of different sonic characteristics to
the sound. A sample & hold is also included which can be modulated by
tempo, LFO, or MIDI. The flanger can operate in mono (left input), pseudo-
stereo and true stereo I/O modes.
This unique flanger is implemented using a number of internal delay lines –
flanger “stages” – whose delay lengths are constantly changing in response
to an oscillating modulation signal or MIDI controller. The flanging effect
occurs when an undelayed signal is combined with these delayed signals,
causing a cancellation that creates peaks and notches in the frequency
spectrum which move with the sweeping control signal.
RFX Flanger Parameters:
Please refer to the RFX Flanger block diagram on the previous page to better
understand the effect and modulation routings.
Flange Offset
This is the offset, or initial delay time, to which the
modulated delay sweep is added. One way to view this
is as the minimum sweep delay, an interpretation that is
shown in the display of the Flange Range parameter: its
delay range value is dynamically redisplayed as the
Flange Offset changes. The Flange Offset can be
adjusted from a minimum of 0 (actually 1 sample) to 40
milliseconds.
Flange Range
This parameter scales the extent of the delay sweep. It is
displayed as a pair of values beginning at the Flange
Offset and extending to the Offset plus the Range to
show the actual delay times over which the flanger will
sweep. Classic flanger effects occur when the Offset is
near zero and the Range is less than 10msec. Wider
Ranges and larger Offsets are more useful for to achieve
“doubling” or spatial effects, and long delays coupled
with high Feedback can create highly resonant robot-
like sounds on vocals.
Resync
- This MIDI
control restarts the Flanger’s
LFOs whenever the controller
value changes from zero to a
positive number.
Sweep Source
This parameter allows the flanger’s sweep to be driven
by the internal LFO1 or directly by a MIDI controller.
When this parameter is set to LFO1, the LFO frequency
is set directly by the Sweep Rate parameter.
•
LFO 1
- modulation oscillator
Whenever the Sweep Source is set to LFO1, the LFO1
Sweep Rate modulation parameter is also active. When
a MIDI controller is patched to LFO1 Sweep Rate, the
