Roland XP-30 owner manual 205, Equal Temperament, Just Intonation tonic of C, Arabian-type Scale

■Scale Tune Function

(Model ID : 42H (GS), address: 40 1x 40H)

Scale Tune is a function that makes fine adjustments to the pitch of each note C-B. Settings are made for one octave, and applied to the notes of all octaves. By making Scale Tune settings you can use tunings and temperaments other than the standard Equal Temperament. Here we give three types of settings as examples.

*Scale tune messages for any parts are recognized in the patch mode.

❍Equal Temperament

This temperament divides the octave into 12 equal steps, and is the temperament most frequently used today, especially in western music. Initially, the Scale Tune function of this instrument is set to Equal Temperament.

❍Just Intonation (tonic of C)

The primary triads sound more beautiful in just intonation than in equal temperament. However, this applies only in one key, and chords will be discordant if you play in a different key. The settings here are for a tonic of C.

❍Arabian-type Scale

The Scale Tune function allow you to use various tunings of ethnic music. Here is one of the Arabian scales.

Setting Examples

Note	Equal Temp.	Just (in C)	Arabian-type Scale
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

The values in the above table are in units of 1 cent. Convert these values to hexadecimal, and transmit them as exclusive data. For example to set the Scale Tune of Part 1 to an Arabian-type scale, transmit the following data.

F0 41 10 42 12 40 11 40 3A 6D 3E 34 0D 38 6B 3C 6F 40 36 0F 76 F7

MIDI Implementation

■ASCII Code Table

On the XP-30, the following ASCII code set is used for processing data such as the Patch

Name and the Performance Name.

+——————+——————+——————++——————+——————+——————++——————+——————+——————+ D H Char D H Char D H Char +——————+——————+——————++——————+——————+——————++——————+——————+——————+

	32	20H	SP	64	40H	@		96	60H	`
	33	21H	!	65	41H	A		97	61H	a
	34	22H	"	66	42H	B		98	62H	b
	35	23H	#	67	43H	C		99	63H	c
	36	24H	$	68	44H	D		100	64H	d
	37	25H	%	69	45H	E		101	65H	e
	38	26H	&	70	46H	F		102	66H	f
	39	27H	`	71	47H	G		103	67H	g
	40	28H	(	72	48H	H		104	68H	h
	41	29H	)	73	49H	I		105	69H	i
	42	2AH	*	74	4AH	J		106	6AH	j
	43	2BH	+	75	4BH	K		107	6BH	k
	44	2CH	,	76	4CH	L		108	6CH	l
	45	2DH	-	77	4DH	M		109	6DH	m
	46	2EH	.	78	4EH	N		110	6EH	n
	47	2FH	/	79	4FH	O		111	6FH	o
	48	30H	0	80	50H	P		112	70H	p
	49	31H	1	81	51H	Q		113	71H	q
	50	32H	2	82	52H	R		114	72H	r
	51	33H	3	83	53H	S		115	73H	s
	52	34H	4	84	54H	T		116	74H	t
	53	35H	5	85	55H	U		117	75H	u
	54	36H	6	86	56H	V		118	76H	v
	55	37H	7	87	57H	W		119	77H	w
	56	38H	8	88	58H	X		120	78H	x
	57	39H	9	89	59H	Y		121	79H	y
	58	3AH	:	90	5AH	Z		122	7AH	z
	59	3BH	;	91	5BH	[		123	7BH	{
	60	3CH	<	92	5CH	\		124	7CH
	61	3DH	=	93	5DH	]		125	7DH	}
	62	3EH	>	94	5EH	^	+——————+——————+——————+
	63	3FH	?	95	5FH	_
+——————+——————+——————++——————+——————+——————+
D: decimal
H: hexadecimal
Note:			SP indicates “space”.

Appendices

205