a couple of tweakers (knobs) that could get them the sound they
wanted. We took their advice and set about to design a better way...
There are only six tweakers associated with adjusting the sound of VP8
Factory presets. Four of them are assigned to tuning the processing
“texture” while the two remaining ones tweak “equalization”.
As mentioned before, each tweaker has eleven positions numbered 0
through 10. When a Factory preset is recalled all six tweakers reset to
their midpoint positions, which is “5” for the texture tweakers and “0”
for the EQ controls. Each tweaker then allows adjustments up and
down from a Factory preset’s starting point.
We’ve made the adjustment range of each tweaker provide plenty of
range around our Factory preset values and as we’ve previously seen,
with just six tweakers millions of possible sound textures can be
created. As always, you can safely get right back to where you started
out simply by recalling the original Factory preset!
How do the tweakers work?
Each GUI Lite tweaker moves a group of controls that would normally
be associated with GUI Pro. Note that the GUI Lite controls are not
new controls or even ones that are hidden behind a secret back door.
Rather, they are the same controls that already exist in the “GUI Pro”
version of the graphical user interface. The difference is that GUI Lite
can move more than one control at once while GUI Pro can’t.
What causes a GUI Lite control to stop before reaching 0 or 10?
Because GUI Lite is adjusting parameters that would normally be
associated with GUI Pro, it’s possible for one of the parameters being
adjusted to encounter its normal end stop while being adjusted by a
GUI Lite tweaker.
Since we’re not allowed to go past a control’s natural end stop GUI Lite
must do something to let the user know that an end stop he can’t see
has been reached. We manage this by preventing the GUI Lite tweaker
from going any further in whatever direction is causing a parameter to
reach one of its own natural limits – the same limit that GUI Pro would
bump into if it were being used. The following graphic illustrates this.
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Summary of Contents for VP8 Plus
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