Roland XP-30 用户手册

Use the Bias parameter when you want keyboard position to 
affect the TVA level.

fig.3-45.e

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.

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

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

the range below the Bias Point

the range above the Bias Point

the ranges both above and below the Bias 
Point

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

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

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.

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.

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.

These parameters determine how the keyboard will affect the 
time changes of the TVA envelope.

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.

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.

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.

These parameters make settings for the TVA envelope 
(changes over time in the TVA level).

fig.3-46.e

Adjust the time over which the volume changes from one 
point to the next.

Adjust the volume level of each point relative to the basic 
TVA level.

C-1

G9

+

0

–

C-1

G9

+

0

–

C-1

G9

+

0

–

C-1

G9

+

0

–

+

0

–

+

0

–

T1

T2

T3

T4

L3

L1

L2