(eg type)_vel2(target)

The velocity_to modulations time, in seconds, can be calculated as:

(target) time = (eg type)_(target) + (eg type)_vel2(target) * velocity / 127

and the sustain level, in percentage, as:

sustain level = (eg type)_sustain + (eg type)_vel2sustain

Range is -100 seconds to 100 seconds, but in most typical cases, the effect of velocity on envelope delay and attack times will be negative, and the effect of velocity on other envelope parameters positive. This would make a sound have a faster attack and a slower decay when a note has higher velocity, with attack of 0.5 seconds at 0 velocity and 0.1 seconds at 127 velocity:

ampeg_attack=0.5
ampeg_vel2attack=-0.4
ampeg_decay=0.5
ampeg_vel2decay=1
ampeg_sustain=50
ampeg_release=0.25

EQ

TODO