Alesis DEQ230 Reference Manual page 66

5
Program Charts
31 Tape Hiss Reduction
32 Mini TV
33 Megaphone Bandlimit
34 Air Boost
35 AM Radio
36 R&B Radio
37 Acoustic Guitar Air
64
This is a way to deal with noisy source material that originates
from magnetic media.
If you want to make your audio sound as if it's coming from one
of those portable televisions, try this one.
Sounds like what the name implies.
Just the opposite of the high shelf curve.
Another band-limiting curve for using as an effect.
A simulation of the general emphasis of certain bass and treble
frequencies found across modern R&B radio stations.
Try putting two mics pointing at different areas of an acoustic
guitar and running it through this program.