Roland V-Synth owner manual 170, Equal Temperament, Just Temperament Tonic of C, Arabian Scale

MIDI Implementation

<Example4> Getting Temporary Patch data of whiole part (RQ1) at once;

According to the “Parameter Address Map” (p. 159), the start address of Temporary Patch of whole part is assigned as following:

10 00 00 00	Temporary Patch (Part 1)
10 01 00 00	Temporary Patch (Part 2)
:
10 0F 00 00	Temporary Patch (Part 16)

The offset address of Patch is also assigned as follows:

00 00 00	Patch Common
:
00 10 00	Patch Oscillator (Zone 1)
:
00 20 00	Patch Envelope (Zone 1)
:
00 40 00	Patch LFO (Zone 1)
:
00 50 00	Patch COSM1 (Zone 1)
:
00 60 00	Patch COSM2 (Zone 1)
:
00 70 00	Patch Arpeggio (Note 1)
:
00 7F 00	Patch Arpeggio (Note 16)

As the data size of Patch Arpeggio is 00 00 00 42H, summation of the size and the start address of Temporary Patch (Port 16) Arpeggio (Note 16) will be;

10 0F 00 00H

00 00 7F 00H +) 00 00 00 42H 10 0F 7F 42H

And the size that have to be got should be;

10 0F 7F 42H -) 10 00 00 00H 00 0F 7F 42H

Therefore the system exclusive message should be sent is;

F0	41	10	00 53	11	10 00 00 00	00 0F 7F 42	??	F7
(1)	(2)	(3)	(4)	(5)	address	data	checksum	(6)
(1) Exclusive Status			(2) ID (Roland)			(3) Device ID (17)
(4) Model ID (V-Synth)			(5) Command ID (RQ1)			(6) End of Exclusive

Calculating the checksum as shown in <Example 2>, we get a message of F0 41 10 00 53 11 10 00 00 00 00 0F 7F 42 20 F7 to be transmitted.

■The Scale Tune Feature (address: 40 1x 40)

The scale Tune feature allows you to finely adjust the individual pitch of the notes from C through B. Though the settings are made while working with one octave, the fine adjustments will affect all octaves. By making the appropriate Scale Tune settings, you can obtain a complete variety of tuning methods other than equal temperament. As examples, three possible types of scale setting are explained below.

❍Equal Temperament

This method of tuning divides the octave into 12 equal parts. It is currently the most widely used form of tuning, especially in occidental music. On the V-Synth, the default settings for the Scale Tune feature produce equal temperament.

❍Just Temperament (Tonic of C)

The principal triads resound much more beautifully than with equal temperament, but this benefit can only be obtained in one key. If transposed, the chords tend to become ambiguous. The example given involves settings for a key in which C is the keynote.

❍Arabian Scale

By altering the setting for Scale Tune, you can obtain a variety of other tunings suited for ethnic music. For example, the settings introduced below will set the unit to use the Arabian Scale.

Example Settings
Note name	Equal Temperament	Just Temperament (Key-tone C)	Arabian 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 table are given in cents. Convert these values to hexadecimal, and transmit them as Exclusive data.

For example, to set the tune (C-B) of the Part 1 Arabian Scale, send 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

■ASCII Code Table

Patch Name and Performance Name, etc., of MIDI data are described the ASCII code in the table below.

+——————+——————+——————++——————+——————+——————++——————+——————+——————+ 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

* “SP” is space.

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