Creating
Alternative
Temperments
In
Scale
Mode,
alternative
tunings
are created
by editing the
E-T
program
similarly
to
the way
that
in
Patch
Mode,
you can
take one basic
sound
and edit it
into
a
number of
variations.
NOTE:
Unlike
Patch
Mode,
Scale
Mode
PRESET does not
automatically
come on
when
power
is
first
switched
on.
Switch
on
PRESET the first
time Scale
Mode is entered
after
power-up
(unless
recording
the
E-T
program, as in
steps
6-8).
9.
For
best
accuracy,
press
TUNE.
(The TUNE
routine works
normally
in Scale
Mode,
just
as
in
Patch
Mode.)
10.
While
playing
on
the
keyboard, tune the
intervals
by adjusting the
knobs
shown
on
Figure
5-0.
The
center
setting,
5,
corresponds
to the
equal-tempered
pitch.
and 10
correspond
to
approximately
one-half
semitone
below
and
above it. This
also works
like
Edit in
Patch
mode—the
knobs don't show
their "real"
positions until
you
move
them.
If
you
prefer,
intonation can be
adjusted manually
if you switch PRESET
off.
The
tuning
will
then
initially correspond to
wherever
the
twelve
knobs
happen to be
set.
When tuning
is
concluded, the
knob
settings
will
represent
the
deviations from
equal-tempered
pitch by
their difference from
center
"5".
11. We must
leave the actual
method of tuning to you.
For example,
a Pythagorean
scale in
the key
of
C
could be
established by leaving C
at
its equal-tempered pitch,
then
zero-beating G to C,
D to G,
A to D and so on.
Recording the Alternative
Temperment Program
12. When you
have
set
the
desired tuning, switch
RECORD on.
13.
Select
the BANK in which
the alternative Scale program is to be
stored.
U. Press the
PROGRAM SELECT
for
the
alternative Scale
program destination.
This
Scale program is now recorded.
(So this program location
cannot
be
used in
Patch
Mode.)
15.
Additional tunings can be created
by selection and editing in
the same manner. Of
course, you can start by
editing any Scale
program,
not
just
the
E-T
program.
Returning from Scale Mode to Patch
Mode
16.
With one hand hold the
PROGRAM
SELECT
of the Scale Program which
you
want
to maintain (which may be the
E-T
Scale
program)
and
hit TUNE.
The PROGRAM
SELECTS
return to normal indications, and all
Patch
Mode programs will have
the
new
intonation.
If
you somehow
can't find
your
E-T program
and want to get the Prophet
back
to
normal
quickly, just
reset (switch
power off then back on).
CMIOOOD
2/82
5-5
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