Roland SH-1 - Page 27

synthesizing sounds
4.
ENVELOPE
CONTROL
OF
THE
VCF
tontroiiing the VCF
with the
Envelope
In
the drawing
at
the right, both the
VCF
and VGA are controlled by the same
envelope.
This type of setting is the
most
common.
The
drawing below shows an
example of
a
string bass sound. With the
VCF
ENV-1
control at
"10",
the
cutoff
point of the VCF
is
controlled
by
ENV-1.
This can be heard
clearly
by
raising the
VCA
HOLD control.
(3)
Control
of
tht
VCF and VCA
with the
same envelope
ENV-1
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VCF
VCA
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This
example shows
control of the
VCF
and
VCA by
separate
envelopes such as
might be used for
brass
instrument
sounds.
The
example
below shows
a
trumpet
sound.
ENV-1 controls
the VCF to
change the
tone
color during the
production
of
each note,
while ENV-2
controls the
VCA
in what is almost
only an
on/off function.
(4)
Control
of
the VCF and VCA
with separate
envelopes
ENV-1
ENV-2
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VCF VCA
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26