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Chapter 3. Creating Your Own Sounds
PATCH SCALE
KEY SCALE
If you wish to define a scale for use in Patch mode, press
[SYSTEM] while in Patch mode, and then press [TUNE] located
in the row of function buttons. to access the PATCH SCALE
display. If you wish to define a scale for use in Performance
mode/GM mode, press [SYSTEM] while in Performance mode,
and then press [TUNE] located in the row of function buttons
to access the KEY SCALE display. To make settings for another
Part, use the cursor buttons to select the desired Part.
Define a scale by specifying how much the pitch will differ
from the equal tempered pitch (in steps of 1 cent). In Patch
mode there are separate screens for the white keys and black
keys, and the settings for one octave (C–G) will determine
the tuning for all octaves. In Performance mode/GM mode,
you can make settings for each key in each Part.
* One cent is 1/100th of a semitone.
Equal Temperament
This scale divides an octave into 12 equal parts for the
tuning system that is most widely used in Western
music. The XP-30 employs equal temperament when
the Scale Tune Switch is set OFF.
Pure Temperament (Tonic is C)
With this tuning, the three fundamental chords sound richer
compared to equal temperament. This effect only applies to
one key, and transposition makes the chord ambiguous.
Arabian Scale
In this scale, E and B are a quarter-note lower and C#, F#
and G# are quarter-note higher compared to equal
temperament. The intervals between G and B, C and E, F
and G#, A# and C#, and D# and F# have a natural third (the
interval between a major third and a minor third). With the
XP-30, you can play Arabian scale in G, C and F keys.
<Examples>
Note
Equal
Pure temperament
name temperament
C
0
C#
0
D
0
Eb
0
E
0
F
0
F#
0
G
0
G#
0
A
0
Bb
0
B
0
114
Arabian scale
(tonic C)
0
-6
-8
+45
+4
-2
+16
-12
-14
-51
-2
-8
-10
+43
+2
-4
+14
+47
-16
0
+14
-10
-12
-49
Program Change (PGM CHNG)
TRANSMIT P.C
(Transmit Program Change)
When you want to transmit MIDI messages (Program
Change and Bank Select) to select sounds on an external
MIDI device, make settings in this display and then press the
ENTER button.
Channel (Transmit MIDI Channel)
Select the channel on which the MIDI message will be
transmitted.
P.C# (Transmit Program Change)
Select the Program Number you wish to transmit.
Bnk-MSB (Transmit Bank Select MSB)
Select the MSB (control number 0) of the Bank Select number
you wish to transmit.
Bnk-LSB (Transmit Bank Select LSB)
Select the LSB (control number 32) of the Bank Select number
you wish to transmit.
Checking Things Such as the
Installation Status of Wave
Expansion Boards (INFO)
INFO EXP (Information Expansion Board)
The names of Wave Expansion Boards installed in slots EXP-
D and E are displayed. Slots without any boards installed are
indicated "----------------."
* If for both Expansion D: and Expansion E: an identically named
Wave Expansion Board is displayed, it will be possible to select
data only from the Wave Expansion Board installed in the EXP-
D slot. Also, the XP-30 already contains the data of the three
Wave Expansion Boards listed below, and if the names of any of
these Wave Expansion Boards are displayed, it will be possible
to select only the onboard data (XP-A–C).
- SR-JV80-09 "Session" (XP-A)
- SR-JV80-02 "Orchestral" (XP-B)
- SR-JV80-11 "Techno Collection" (XP-C)
BATTERY CHECK
The XP-30 contains a battery that backs up the data in
internal memory. This display allows you to check the
battery voltage. If the display indicates OK, there is sufficient
battery voltage. If the display indicates LOW, the battery
voltage has run down. Contact your nearby Roland service
station to have the battery replaced.
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