Roland XP-30 Program Change PGM Chng, Patch Scale KEY Scale, Transmit P.C, Battery Check

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	Arabian scale
name	temperament	(tonic C)
C	0	0	-6
C#	0	-8	+45
D	0	+4	-2
Eb	0	+16	-12
E	0	-14	-51
F	0	-2	-8
F#	0	-10	+43
G	0	+2	-4
G#	0	+14	+47
A	0	-16	0
Bb	0	+14	-10
B	0	-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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