Roland SH-1 - Output Waveform

This
switch is
usually set at
GATE
+
TRIG or
GATE for
triggering
the envelope
generator
each time a
key
is
depressed.
The gate
portion
of the
keyboard output
actually
consists
of two
simultaneously
generated
pulses.
The gate pulse
is merely
a
constant
voltage
which appears any
time
one
or more
keys
are in the
depressed
position,
in other
words, it is
like the
output
of a
fight switch.
Depressing one
or
more
keys
turns
the
voltage
on;
when ail
keys have
been
released,
the voltage
goes
off.
The
trigger
puise is a
short pulse
which is
generated
when a
new key is
depressed.
When two or
more
keys are pressed, a
trigger
pulse
will
be
produced
each time
the highest
key in
the group is
depressed
or
released.
The
GATE
+
TRIG position
of this
switch
might be
considered its
normal position.
This
position
will
trigger the
envelope
generator
for
each note in a
passage played
legato
as shown at (A). It
is also
useful for
playing fast
trills very
easily. This is ac-
complished by
holding down the
lower
note in
the
trill while
repeatedly
tapping
on
the key
for the
upper note of the
trill.
The
GATE
position
of this switch is
useful
in legato
passages
where
it
is desirable
to
produce only
one envelope
forthe complete
phrase.
In the
LFO
position,
depressing
a
key
will
cause
the
envelope
generator to be
triggered
by
the
LFO.
This is useful
for producing
rapidly
repeating
notes such as
those
sometimes
used
in mandolin
playing.
In
addition, this
position
synchronizes
the
LFO output
to the
keyboard so
that the
pattern
of repeated
notes will always
start
the
instant a key is
depressed.
FUNCTION OF
GATE AND
TRIGGER
GATE
TRIGGER
iL
ENV-1
OUTPUT
WAVEFORM
(GATE
+ TRIGGER)
ENV-1
OUTPUT
WAVEFORM
(GATE
«
ENVELOPE
GENERATOR
CONTROLLED BY LFO
KEY
LFO
(MOD)
ENV-1
OUTPUT
ENVELOPES FOR
VARIOUS
INSTRUMENTS
ENVELOPE
WAVEFORM
ADSR
SETTING
CONTROLLED
FUNCTION
FLUTE
VIOLIN
2
10 2
-D^a- u-
VCF/VCA
3
10
2
VCA
TRUMPET
VCF/(VCA)
HARPSICHORD
4 4
VCA
XYLOHPONE
2
2
VCF/VCA
20