Roland Polyphonic GR-300 - PITCH SHIFT

PITCH SHIFT
Another VCO effect is pitch shift, an effect
where the V CO's can be shifted to pitches other
than the string pitches. In the DUET mode, the
fundamental pitches will be the same as the
string pitches, and the VCO's can be turned to
other pitches so that one instrument produces
the effect of a very large group.
Set the Guitar Synthesizer and Controller for
the standard settings shown on page 4, but with
the BALANCE control fully clockwise. Press
the DUET foot switch. Next, press the PITCH
"A" foot switch and note that the LED above
the switch lights. While producing sound, try
turning the PITCH ''A" knob up and down and
note that this now controls the VCO pitches.
Try tuning the VCO's to a perfect fourth below
the fundamental string pitch. For this, the
PITCH "A" knob will be set somewhere near
-3
Next, try Pitch “B” by pressing the PITCH ”B”
foot switch and adjusting the PITCH В” knob
so as to produce the interval of a major third
above the fundamental.
At this point, "A" tuning is a perfect fourth
below the fundamental string pitch and “В”
tuning ís a major third above. The VCO tuning
can now be switched instantly and accurately
between these two preset pitches and unison by
pressing the appropriate PITCH foot switch.
Pressing PITCH "A" produces the "A" tuning;
pressing it again cancels the "А" tuning. Press-
ing PITCH "B'' produces the "B" tuning, and
pressing again cancels it. It is possible to switch
from “A” to “В” or from “B” to "A" without
passing through unison by merely pressing the
new pitch foot switch.
The UNLATCH/LATCH switch below each
PITCH knob controls: the latching function of
the related PITCH foot switch. At LATCH, the
pitch change function will alternate between
the ON and OFF state each time the foot switch
is pressed as described in the preceding para-
graph. At UNLATCH, the tuning function will
be ON only while the foot switch is held down
and OFF when it is released.
It is possible to add a pitch sweep (portamento)
to the pitch shift effect. Set the controls as
they were previously (‘‘A” pitch a perfect fourth
below the fundamental and “В” pitch a major
third above), then set both RISE TIME and
FALL TIME at "5". While producing soünd,
press the PITCH “А” foot switch and note that
the pitch slides downwards from unison to the
“A” tuning. Next press the PITCH "'B'' foot
switch and the pitch will slide from the “А”
tuning to the "B'' tuning.
RISE TIME controls the amount of time re-
quired for the pitch to change when it rises;
FALL TIME controls the amount of time
required when the pitch falls. Note that this
effect occurs only when using the pitch shift
effect and is not the same as the portamento
effect which can be added to melodies played
on a keyboard type synthesizer. When “instant”
changes are desired, the controls should be left
at "O". Try this effect with RISE TIME AT "0"
and FALL TIME at “10”.
PITCH RISE AND
FALL FINE SET
мим © "МАХ
RISE TIME FALL TIME
AÁC——-PITCH —H
Ae A
max’ "МАХ
мах“ е MAX
UNLATCH Г“ LATCH UNLATCH LATCH
2 CHANNEL SELECTS UNLACH/LACH SELECTS A oi
PITCH SHIFT mode FOOT SWITCH B by FOOT
SWITCH
if a foot switch is used with the rear panel
SWEEP ON/OFF jack,the ON/OFF function of
the pitch sweep can be controlled with a foot
switch.