FXAlg #154: Flanger 1 ¥ FXAlg #155: Flanger 2
Algorithm Reference-61
Noise Gain
The amount of noise (dB relative to full scale) to add to the input signal. In many
ßangers, you can hear the noise ßoor of the signal being ßanged, but in the K2500, if
there is no input signal, there is no noise ßoor unless it is explicitly added. [Flanger 2
only]
Noise LP
The cut-off frequency of a one-pole lowpass Þlter acting on the injected noise. The
lowpass removes high frequencies from an otherwise pure white noise signal. [Flanger 2
only]
StatDlyCrs
The coarse adjustment to the static delay tap length. The name suggests the tap is
stationary, but it can be connected through an FX Mod to a control source to smoothly
vary the delay length. The range for all delays and excursions is 0 to 230 ms, but for
ßanging the range 0 to 5 ms is most effective.
StatDlyFin
A Þne adjustment to the static delay tap length. The resolution is one sample.
StatDlyLvl
The level of the static delay tap. Negative values polarity-invert the signal. Setting the
tap level to 0% turns off the delay tap.
Xcurs
n
Crs
These set how far the LFO-modulated delay taps can move from the center of their
ranges. The total range of the LFO sweep is twice the excursion. If the excursion is set to
0, the LFO does not move and the tap behaves like a simple delay line set to the
minimum delay. The excursion cannot be made longer than the delay to the center of
excursion (see Dly Crs and Dly Fin below) because delays cannot be made shorter than
0. If you attempt longer excursions, the length of the Dly Crs/Fin will be forced to
increase (though you will not see the increased length displayed in the Dly Crs/Fin
parameters), and you will hear discontinuities in the signal, usually in the form of zipper
noise. The range for all delays and excursions is 0 to 230 ms, but for ßanging the range 0
to 5 ms is most effective. This parameter is a coarse adjustment for the excursion.
Xcurs
n
Fin
A Þne adjustment for the LFO excursions. The resolution is one sample.
Dly
n
Crs
The delay to the center of LFO tap range. The maximum delay will be this delay plus the
LFO excursion delay. The minimum delay will be this delay minus the LFO excursion
delay. Since delays cannot be less than 0 ms in length, the this delay length will be
increased if LFO excursion is larger than this delay length. The range for all delays and
excursions is 0 to 230 ms, but for ßanging the range 0 to 5 ms is most effective. This
parameter is a coarse adjustment for the delay.
Dly
n
Fin
A Þne adjustment to the minimum delay tap lengths. The resolution is one sample.
LFO
n
Level
The levels of the LFO modulated delay taps. Negative values polarity-invert the signal.
Setting any tap level to 0% turns off the delay tap.
LFO
n
Phase
The phase angles of the LFOs relative to each other and to the system tempo clock, if
turned on (see Tempo). For example, if one LFO is set to 0
°
and another is set to 180
°
,
then when one LFO delay tap is at its shortest, the other will be at its longest. If the
system tempo clock is on, the LFOs are synchronized to the clock with absolute phase. A
phase of 0
°
will put an LFO tap at the center of its range and its lengthening.
L/R Phase
Adds the speciÞed phase angle to the right channel LFOs. In all other respects the right
and left channels are symmetric. By moving this control away from 0
°
, the stereo sound
Þeld is broken up and a stereo image becomes difÞcult to spatially locate. The effect is
usually described as ÒphaseyÓ. It tends to impart a greater sense of motion.
