DigiDesign Digidesign Pro Tools 8.0, Reference Manual

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Chapter 26: Fades and Crossfades 517
Use Dither
The
Use Dither
option turns on a preset, noise-
shaped dither function that improves audio per-
formance when fading in or fading out of si-
lence, and crossfading between low amplitude
regions. Dithering is usually not necessary when
applying fades to regions with audio at high am-
plitudes. You can disable Dither while editing
fades in the Fades dialog to speed up previews
and fade recalculation, then re-enable Dither to
create the final fade or crossfade.
Fade-In Shape Settings
The
In Shape
setting lets you define the shape of
the fade-in to a region for a fade, or to region 2
for a crossfade.
Standard
Selects a single continuous fade curve.
This creates a general-purpose fade that can be
edited by dragging the curve itself.
S-Curve Selects an S-shaped curve, which inverts
its beginning and end characteristics. This
makes it possible to fade in faster at the start of
the curve, and slower at the end. S-shaped
curves are useful with material that is difficult to
fade effectively. S-curves can be edited by drag-
ging the curve in the curve editor.
Preset Curves
Seven commonly used preset
curves are provided for fast creation. These can
be edited by dragging the end points of the
curve in the curve editor portion of this dialog.
The seven presets are as follows:
‹
Preset Curve 1 fades in at full volume immedi-
ately at the beginning of the fade and keeps it
there throughout the fade.
‹
Preset Curve 2 fades in quickly in the begin-
ning, reaching full amplitude fairly early in the
fade.
‹
Preset Curve 3 fades in moderately fast.
‹
Preset Curve 4 fades in with a linear fade
curve. This is the default curve.
Dither option for Fades
Fade-in Shape
Preset Curve 1
Preset Curve 2
Preset Curve 3
Preset Curve 4