Roland SH-1 - Page 24

synthesizing
sounds
t
WAVEFORM
AND
RANGE
Basic
Setting
{depressing key
produces
8'
/\ wave)
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In order
to
understand
synthesis It
is
usually
best to
begin by
imitating
known
sounds.
Using a
guitar
amplifier, stereo
amplifier, or
headphones,
read and
try the
following.
I.The
Basic
Setting
First set the
synthesizer as
shown
in the
drawing
above.
Pressing a key
produces
the
sound of the
8'
A
waveform. Try
this
sound
with the
RANGE
switch at
32',
16',
4',
and
2'
also.
2.
Differences in
Waveforms
Since the
VCF
CUTOFF FREQ
control
is
at
HIGH, the
VCO
waveforms pass
through
the
synthesizer without
change.
Try the
other
waveforms.
Changing
the
WAVEFORM
switch
to
PU
as shown
in
(1)
produces
the
square
wave.
Note the
difference
between this
tone
color and
that
of
the
sawtooth
wave.
The
WAVEFORM
switch setting
in
<2)
produces the
pulse wave. Try
moving
the
PULSE
WIDTH slider
slowly
up
and
down
and note
the
differences
in tone
color,
(3)
shows
how to
obtain LFO
modulation
of the
pulse width.
This
produces a very
electronic
type
sound. Try
different
positions
of the PULSE
WIDTH
slider and
the
MODULATOR
section
RATE
slider.
(4)
shows
how to
obtain pulse
width
modulation by
means of
ENV-1.
Try
ENV-1 settings
of: A=0,
D=5. S=0,
and
R=5
for
an
interesting effect.
m ru
SQUARE
wave
rgi n
j
PULSE
WAVE
vco
o
o
(~- AUTOBENO
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PULSE WIOTH
MOD
—
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MOD DEPTH TIME PULSE
WIDTH
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MODULATION
OF
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DEPTH TIME PULSE
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MODULATION
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23