DigiTech Midi Implementation Manual page 96

Position (0-2)
0 Near
1 Mid
2 Far
Pre-Delay Time (0-80)
0 0 Millisecs.
. .
80 80 Millisecs.
Reverb Decay (A) (0-11)
0 100 Millisec.
. .
11 1200 Millisec.
Reverb Decay (B) (0-21)
0 1.00 Seconds
1 1.15 Seconds
2 1.33 Seconds
3 1.53 Seconds
4 1.77 Seconds
5 2.00 Seconds
6 2.35 Seconds
7 2.71 Seconds
8 3.13 Seconds
9 3.61 Seconds
10 4.16 Seconds
11 4.80 Seconds
12 5.54 Seconds
13 6.39 Seconds
14 7.37 Seconds
15 8.50 Seconds