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The Effects Chain Editor
Effects Parameters
Flanger
Flanging is the process of adding or subtracting a signal with a time-displaced replica of itself,
which results in a series of notches in the frequency spectrum, generally referred to as a comb
filter. In the Forte SE, the flanger is a multi-tap delay line, all (but one) of whose taps can
have their lengths modulated up and down by a low frequency oscillator (LFO). The rate of
the LFO is expressed in Tempo.
StatDlyLvl (Static Delay Level) is the level of the first, non-moving tap. Negative values
invert the polarity of the tap. The range is -100 to 100%; 0% turns the tap off.
DlyCrs and DlyFin are the coarse and fine length controls for the Static delay (StatDly...)
and for the minimum value of the moving delays (Dlyn...). The coarse range is 0 to 228 ms,
and the fine range adjusts the coarse range in samples (= 1/48,000 sec = 20.8μsec) from -127
to 127.
Xcurs Crs and Xcurs Fin determine 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 coarse range is 0 to 228 ms; the range 0 to 5 ms is most effective
for flanging. The fine range adjusts the coarse range in samples from -127 to 127.
Quantize
This effect produces digital distortion known as quantization noise, by limiting the number
of bits available to the signal. See effect 329 "Aliaser."
DynamRange (dynamic range) controls how many bits to remove from the signal data
words. The lower the level, the greater the distortion. At 0 dB the hottest of signals will
toggle between only two quantization levels, thereby producing a square wave. Every 6 dB
added doubles the number of quantization levels, reducing the noise and getting closer to
the original signal. If the signal has a lot of headroom (available signal level before digital
clipping), then not all quantization levels will be reached. Range is 0 to 144 dB.
Headroom sets the available signal level before digital clipping. Setting this properly
prevents the signal from getting too loud at low levels of DynamRange. You want to have it
match the amount of level still available above the input signal: this is done by finding the
DynamRange level at which the signal starts getting louder, and setting Headroom to match
the DynamRange value. Range is 0 to 144 dB.
DC Offset adds a positive DC Offset to the input signal, which allows you to alter the
position where digital zero is with respect to your signal. At low DynamRange settings, this
can cause the output to "sputter." Range is Off/-79.0 to 0.0 dB.
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