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more than six keys are held
down at
the same time, the computer will
reassign i
earliest used
voices
first. For
example:
playing and holding
C,
D, E, F,
G, A, and B
succession will result
in D, E, F,
G, A, and B being sustained, while the
C
disappear when
the B is played. In other words, the Prophet normally operates
on
a
"last-note priority" system: each new note
played is assigned to the
earliest-used
voice.
(If the same key
is
struck
repeatedly, the microcomputer
assigns the
sam
voice.)
3-6
UNISON AND GLIDE
While switching through the Factory Programs,
you
may
have noticed the
Prophet-68
switching in
and out of UNISON mode. There are actually three
Unison modes.
Normal
Unison: To enable, simply switch UNISON TRACK
on, while no keys
are held.
(RECORD must
be off.) The current program will be switched
to UNISON
operation:
all six voices will be assigned
to
the lowest key
played.
In Normal Unison, if more than
one key is played at once, the lower will
be sounded.
The keyboard
will also change from multiple- to single-triggering.
This keyboard
mode
was conventionalized
by the Mini-Moog monophonic
synthesizer and requires—
but
also
allows—a somewhat
different keyboard technique.
Instead of retriggering
with eac*
keystroke, the
envelopes will only retrigger
if the previous key is completely
released
before
the new
key is pressed. This
requires a stacatto
touch.
By the same
token, if
you play legato
,
the envelopes
will only trigger
on the first note, while
the rest
of
the
phrase will be sounded
by the sustain settings
of
the
envelopes. (Unless
the
Arpeggiator
is in use.) With
practice, this system allows
you to selectively
accent
notes by touch.
NOTE: Normal
Unison can only
be switched
off
with
the
UNISON/TRACK switch
(not with the footswitch).
Tracking
Unison: Play and hold any
chord, then switch
UNISON TRACK
on or. i
UNISON TRACK is already
on, hit the footswitch
once. This "latches"
the chord,
so
that any key
you play becomes the
root, while the upper intervals
follow along
(track).
A new chord can
be latched by simply
playing it, then either switching
UNSION
track
off and on,
or hitting the footswitch.
NOTE: Tracking Unison
can only be switched
off with the
UNISON
TRACK switch (not
with the footswitch).
If
the
footswitch is pressed,
this switches
back to Normal
Unison.
Normally you'll release
all keys when switching programs.
However,
if keys are held
while switching
from a polyphonic
to Unison program, these
keys will form
a tracked
chord. (Because keys are
being held when the UNISON/TRACK
switch
goes on.) Thi
trick can
be used to advantage
as a combined program select/chord
track action.
3-*
CM600A 12/82
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