Roland MC-909 owner manual Patch Edit Amp, Key Bias Point, Level + Key

Patch Edit

Amp

These TVA (Time Variant Amplifier) parameters specify how the volume and pan of the sound will change.

Parameter	Value	Description
Patch Level #	0–127	Volume of the entire patch
Tone Level	0–127	Volume of each tone

This parameter is used mainly to adjust the volume balance between tones.

BIAS

Use the Bias parameter when you want the position of notes on a keyboard to affect the TVA level.

	LOWER					UPPER
Level		+			Level
		0
		—			Key
			Bias Point				Bias Point
	C-1			G9 C-1

+ 0 —

LOWER&UPPER

Level +

0

—

Key

G9 C-1 Bias Point

+ 0 —

ALL

Level			—		+
		0				0
		+			—
	Key							Key
				Bias Point
G9	C-1						G9

Bias Level	-100– +100	Angle at which the volume will change relative to the bias direction
		Increasing this value will produce a greater change. Negative (-) values will invert the direction of the
		change.
Bias Position	0–127	Selects the note number relative to which the volume will change.
Bias Direction	LWR, UPR,	Direction of change relative to the bias point
	L&U, ALL	LWR: Notes below the bias point
		UPR: Notes above the bias point
		L&U: Notes to the left and right of the bias point
		ALL: Bias level varies the angle relative to the bias point
Tone Pan	L64–63R	Pan of each tone
		L64 is far left, 0 is center, and 63R is far right.
Pan Keyfollow	-100– +100	Set this parameter if you want the pan to be affected by the note you play.
(Tone Pan Keyfol-		Increasing this value will produce a greater change relative to middle C (C4). Positive (+) values will
low)		cause the pan to move toward the right as you play toward the right. Conversely, negative (-) values
		will adjust pan toward the right.

Pan
R						+100
						+50
o						0
						-50
L						-100	Key
C1	C2	C3	C4	C5	C6	C7

Random Pan Depth	0–63	Amount by which the pan will be varied randomly each time you play a note
(Tone Random Pan		Increasing this value will produce a greater amount of random change.
Depth)
Alter Pan Depth	L63–63R	Amount by which the pan will be moved alternately between left and right each time you play a note
(Tone Alternate Pan		Increasing this value will produce a greater amount of change. This value can be adjusted in the L or
Depth)		R direction, and these will invert the order in which the tone is panned to left and right. If you want
		two tones to alternate between left and right, set each tone to opposite L and R values.

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