Roland SH-1 Instruction Manual

4. RANGE SWITCH
This switch changes the VCO
range in one
octave
jumps
from
2'
to
32',
for a total
range of five octaves.
The
8'
position of the
RANGE switch is used for
sounds in the
middie sound
range; the lowest C on the
keyboard
will produce the pitch of
middie
C.
The
4'
position produces pitches in
the
range
one
octave
above
8',
and the
2'
position produces pitches two
octaves
above
8'.
The
16'
and
32'
positions produce
pitches one and two octaves beiow
8'
respectively,
5.
WAVEFORM SWITCH
This
switch
selects the VCO output
wave-
form.
{1)
SAWTOOTH WAVEFORM
(/I)
The sawtooth
wave
is very rich in
harmonics
and therefore
is used very often. It
is
particularly suitable for brass and string
sounds,
and for sounds which only
the
synthesizer can
produce.
(2)
SQUARE WAVE
(QJ)
The square wave
is
also rich in harmonics,
but it contains only the odd
numbered
harmonics. The
pure square
wave has a
sound
quality very much like a
clarinet.
The clarinet and xylophone are
common
sounds synthesized with
this
waveform, as
well as sounds
peculiar
to the
synthesizer.
One
effect which
is very often used is the
continuous sound of
the
square
wave
(without envelope control) accompanied
by portamento.
(3)
PULSE WAVE
(FLJ)
When
the top and bottom portions
of the
square wave are unequal, the result is
what
is called a
pulse
wave. The
harmonic
content of the
pulse
wave will depend
greatiy on the width of the pulses. It is
possible
to modulate, or change the puise
width by means
of
the
LFO
or the
envelope
generator.
SOUND
RANGES
OF
VARIOUS INSTRUMENTS
&va
-CU
-&-
-e-
zs:
IT
GLOCKENSPIEL
XYLOPHONE
FLUTE
OBOE
TRUMPET
VIOLIN
CLARINET
TENOR SAX
FRENCH HORN
TROMBONE
CELLO
-s_
*%rm
1
Fj
8'm
1*16'
^•1
WAVEFORM
SAWTOOTH
SQUARE
DESCRIPTION
The sawtooth wave
con-
tains
a
fundamental
sine
wave and
its
integral har-
monic sine waves
at a fixed
ratio.
The
level
of each
harmonic
is as shown on
the right. When fundamen-
tal content is 1
,
the con-
tent
of
nth
harmonic is 1 /n.
The
square wave contains
a
fundamental
sine
wave and
its
odd
numbered harmon-
ics at a
fixed ratio. The
level of each
harmonic is
the
same
as
sawtooth
wave: the
content of nth
harmonic is 1/n;
except
that
there are no
even
numbered
harmonics.
PULSE
With
pulse wave, the har-
monic content greatly
varies
depending on the
pulse
width.
It
is
charac-
terized
by a lack of the
nth harmonic series when
the pulse
width is 1/n. The
example on the left tacks
3rd, 6th,
and 9th harmon-
ics
because the
pulse width
is 1/3
(33%).
HARMONIC CONTENT
F:
Fundamental
F 2 3 4 5 6
7
PULSE WIDTH
at 33% (1/3).
F
2
4 5
10

Roland SH-1 Specifications

General

Brand	Roland
Model	SH-1
Category	Synthesizer
Language	English