Roland XP-30 Bias, PAN Modulate, TVA Time ENV TVA Time Envelope, TVA Envelope TVA Envelope

Chapter 3. Creating Your Own Sounds

BIAS

Use the Bias parameter when you want keyboard position to

affect the TVA level.

	LOWER					UPPER
Level		+			Level				+
		0							0
		–							–
						Key					Key
	C-1		Bias Point		G9	C-1		Bias Point		G9
	LOWER&UPPER					ALL
Level		+	+		Level		–		+
		0		0			0		0
		–		–			+		–
						Key					Key
	C-1		Bias Point		G9	C-1		Bias Point		G9

Bias (Bias Level)

Adjust the angle of the volume change that will occur in the selected Bias Direction. Higher settings will result in greater change. Negative (-) values will invert the change.

Point (Bias Point)

Select the key at which the volume will begin to change.

Direction (Bias Direction)

Select the direction in which change will occur starting from the Bias Point.

LOWER:the range below the Bias Point

UPPER:the range above the Bias Point

LOWER&UPPER: the ranges both above and below the Bias Point

ALL:the entire keyboard will be biased at the angle determined by the Bias Level, relative to the Bias Point

PAN MODULATE

Use these parameters to affect the location of the TVA Pan.

Keyfollow (Pan Key Follow)

Use this parameter when you want the keyboard position to change the stereo location. Higher values will result in greater change relative to middle C (C4). Positive (+) settings will cause notes played toward the right of the keyboard to be panned right. Negative (-) settings will cause the opposite.

Random (Random Pan Depth)

Use this parameter when you want the stereo location to change randomly each time you press a key. Higher values will result in a greater width of change.

Alternate (Alternate Pan Depth)

Use this parameter when you want the stereo location to alternate between left and right each time you press a key. Higher values will result in a greater width of change.

L or R values can be set, and this will reverse the left/right order of the panning. If you want to alternate the pan position of two Tones, set them to opposite L and R settings.

TVA TIME ENV (TVA Time Envelope)

These parameters determine how the keyboard will affect the

time changes of the TVA envelope.

V-T1 (TVF Envelope Time 1 Velocity Sensitivity)

Use this parameter when you want velocity to affect T1 (time) of the TVA envelope. Higher settings will result in a greater difference between strongly and softly played notes. If you want higher velocities to speed up T1 time, use positive (+) values. If you want higher velocities to slow down T1 time, use negative (-) values.

V-T4 (TVA Envelope Time 4 Velocity Sensitivity)

Use this parameter when you want Key Off Velocity (the speed at which you release a key) to affect T4 (time) of the TVA envelope. Higher settings will result in a greater difference between quickly and slowly released notes. If you want a quicker release to speed up the T4 time, use positive

(+)settings. If you want a quicker release to slow down the

T4 time, use negative (-) settings.

Time Keyfollow (TVA Envelope Time Key Follow)

Use this parameter when you want keyboard position to affect TVA envelope times (T2–T4). Higher values will result in a greater change relative to middle C (C4). Positive (+) settings will result in shorter times as you play toward the right of the keyboard. Negative (-) settings will result in longer times as you play toward the right of the keyboard.

TVA ENVELOPE (TVA Envelope)

These parameters make settings for the TVA envelope

(changes over time in the TVA level).

T1	T2	T3	T4
Level	L1
		L2
			L3
			Time

key is pressed key is released

T1–T4 (TVA Envelope 1–4)

Adjust the time over which the volume changes from one

point to the next.

L1–L3 (TVA Envelope 1–3)

Adjust the volume level of each point relative to the basic

TVA level.

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