Now it's time to set the maximum amount of compression/limiting.
Set the Pre Amp value to adjust the maximum amount of amplification of the input sound.
Very low values cause little change to the sound. Loud sounds will still be clearly
louder than soft sounds.
Very high values make the volume very constant, which is especially useful in noisy
environments, for radio transmissions which usually aim at a very constant output
volume, and if the playback volume is very low, and when the difference in volume
between songs is very large.
For very little compression/limiting, set it to a low value (< 3). For low values, the Pre Limiter is
usually not needed.
If you just want the sound to stay at roughly the same level, keep the Pre Amp slider
at or below 10.
If you need a very consistent or a very loud signal, put the Pre Amp slider at a very high
value (upto 40). Using such high values may make some types of sounds a bit "shrill".
Note that for most types of modern music, using such high values does not cause any ill effects:
They are usually recorded at a very constant level anyway, and if the Pre Limiter output bars
don't move too much, no audiable effects will be introduced.
Very high values may cause existing background hiss in recording to become very prominent. This
will be fixed in a later step.
