Roland Polyphonic GR-300 - COMPRESSION; CAUTIONS WHEN PLAYING

To review:
The ENV MOD (envelope modulation) foot
switch turns the "МОМ" effect on and off.
The SENS (sensitivity) knob controls the depth
of the “wow” effect.
The ATTACK TIME knob controls the time
required for the rising part of the “wow” sound.
The CUTOFF FREQ knob controls the tone
color of the sound manually and is used to set
the initial tone color value. When the ENV MOD
mode is used, the tone color is swept up, then
back down to the initial tone color. И the CUT-
OFF FREQ knob is at “10”, the initial tone
color will be bright, but since the tone color
control is already at maximum, the ENV MOD
mode will have no effect on the tone color.
Press the ENV INV (envelope invert) foot switch
and try the above VCF experiments again, but
this time with the VCF CUTOFF FREQ control
between ''7'' and “8” instead of “3”.
The ENV INV foot switch inverts the effect
that picking a string has on the sound. Instead
of sweeping up, then down, the sound will
sweep down, then back up to the initial
CUTOFF FREQ setting. For this reason, the
VCF CUTOFF FREQ control will have to be
set initially higher than with the normal ENV
MOD mode.
From the above experiments, the basic idea of
how the VCF works can be understood.
CAUTIONS WHEN PLAYING
When playing arpeggios and using envelope mod-
ulation
of
the
VCF,
the
VCF
cutoff
point
will
simultaneously follow the vibrations of all the
notes. If this effect is not desired, dampen the
previously picked string.
COMPRESSION
Set the VCF so that sound passes through it
without being processed or affected by it. To
do this, set the МСЕ CUTOFF FREQ control.at
maximum, RESONANCE at “0”, and the ENV
MOD foot switch at OFF (LED above the ENV
MOD switch is not lit). With the DUET switch
ON, the sound from the VCO's and the funda-
mental pitches from the strings are combined
and pass through the VCF without being
affected. Try picking one of the strings and
note that the VCO sound has a quick -attack
and dies away slowly, just like the original guitar
sound.
Set the COMPRESSION switch at ON and try
picking a string again. The effect is to prolong
the sound. The COMPRESSION mode is most
Often used when synthesizing such sounds as
brass and string sounds.
CAUTIONS WHEN PLAYING.
When there 15 no sound, the compressor circuit
is at maximum gain and the Guitar Controller
will be very sensitive to noises caused by hand-
ling.
| @CUTOFF
CUTOFF FREG CUTOFF РАЕС CUTOFF FREG
LEE ET
(BECOMES SOFTER)
@RESONANCE
5 5 5
a 10 o 170 a за
RESONANCE RESONANCE RESONANCE
А
(BECOMES АССЕМТЕО)
ATTACK ТИМЕ SENS
ENV MOD -— ——EINV INV
ON:
COMPRESSION
EFFECT