4-13
Rev 2.2, 10/31/94
D
ELAY
switch (cont’d)
A long press on the
D
ELAY
switch (
rt
) accesses the
delay line rate of change, with 0.1 being basically
instantaneous, and 9999 being very slow. This
adjustment, along with the
M
ODULATION
D
EPTH
and
R
ATE
are used for chorus type effects or
flanging.
F
EEDBACK
Switch
n-90/oFF/P-90
Sets the attenuation of the cross-
coupled feedback. The range of control is from off
to 0 dB attenuation. The feedback signal may be
in-phase (
P-nn
) or out-of-phase (
n-nn
) where nn
corresponds to the amount of attenuation applied
to the feedback signal. Thus P-10 corresponds to
in-phase (positive) feedback, 10 dB down from
unity gain. Both channels are adjusted
simultaneously. The feedback polarity (phase) is
especially important when creating flanging effects.
Pressing this switch repeatedly toggles between '
out
'
and the current feedback setting.
F
ILTER
Switch
The signal from the delay line drives a single-pole
(6 dB/octave) lowpass filter with a range of 600 to
18kHz. The output of the lowpass filter then feeds
the feedback and mix controls.
R
ATE
Switch
Sets the rate (frequency) for the delay-time
modulation generators (DTMG). The DTMG is either
a random number generator whose value is
updated
rate
times per second, a sine wave of
rate
Hz, or a triangle wave of
rate
Hz, where
rate
is the
value shown in the display. Pressing and holding
the
R
ATE
switch allows changing the DTMG from
random (
rAnd
), to a sine wave (
SinE
), or to a triangle
wave (
AnGL
).
D
EPTH
Switch
Sets the depth of the modulation applied delay time
of the variable delay lines.
100
is maximum,
0
is off.
Pressing this switch toggles between '
out
' and the
current modulation depth setting.
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