DigiTech Midi Implementation Manual page 103

document.
Algorithm 0
MUTE
2 - 45 Not used, set to 0.
Algorithm 1
Cmp+Dst+EQ+NG+E+L+SS
2 Compressor 0-1
3 Compression Amnt 0-31
4 Compression Lvl 0-6
5 Distortion 0-1
6 Distortion Type 0-3
7 Distortion Balls 0-31
8 Graphic Eq 0-1
9 63 Hz 0-24
10 160 Hz 0-24
11 400 Hz 0-24
12 1.0 kHz 0-24
13 2.5 kHz 0-24
14 6.3 kHz 0-24
15 16.0 kHz 0-24
16 Master Volume 0-24
17 Enhancement 0-10
18 Noise Gate 0-1
19 Gate Threshold 0-9