synthesizing
sounds
3.
CONTROLLING
TONE
COLOR WITH
THE VCF
Controlling Tone Color with the VCF
All the settings on the previous
page
were with the
VCF CUTOFF
FREQ set at
HIGH so that the VCF had
no
effect on
the sound. Set this way the
VCF
becomes
a
fixed fitter. In the
drawing
below,
the
CUTOFF
FREQ and RESONANCE con-
trols are set to alter the tone color
of
the
waveforms
from
the VCO.
The
KYBD
slider is raised
so
that the fitter will
follow
the pitches played on
the keyboard. The
ioudness contour of the
sound is produced
by
ENV-1 control
of
the
VCA.
(1)
Controlling tht;
VCA with ENV-1
ENV-1
(PIANO-LIKE
SOUND)
*
VCF
VCA
ISRoland
SVnTHESlEER
SH-1
T\P4hC
6
fiicv
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voutM
PORTAMENTO
Since the KYBD slider
is raised causing the
VCF
to
follow
the
pitches
played, the
tone coior wili
be the same for all notes
played,
thus,
using ENV-2
to
control
the
VCA produces
organ-like
sounds.
Moving the VCF
CUTOFF FREQ or the
VCO PULSE
WIDTH controls will change
the tone coior. Try raising
the AUDIO
MIXER
SUB OSC slider to produce a bigger
sound. Also
try the BENDER for
a
choking
effect.
{2)
Controlling
the
VCA with
ENV-2
(ORGAN-LIKE SOUND}
ENV-2
~n^
——
VCF
VCA
B
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SVFTTHESiEEn
. SH-1
KVSO
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VOLUME
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25
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