PRESONUS AudioBox Stereo Quick Start Manual page 180

Two adjacent events can be sized simultaneously so that no gap is created between them. To
do this, float the Arrow tool to the bottom of where the two Events meet in the Timeline,
where you will see the sizing icon with both left and right arrows illuminated, and then click-
and-drag left or right.
Holding [Alt]/[Option] on the keyboard and then sizing an Event from the right edge will result
in the Event being freely timestretched. Refer to the Timestretching section of this chapter for
more information.
6.2.1.3 Adjust Audio Event Volume Envelopes
All Audio Events feature a basic volume envelope that allows the volume of the audio to be
shaped in several ways. Using the volume envelope, you can create a fade-in and fade-out, as
well as set a constant volume level between the fades. The volume envelope applies gain
changes to the audio clip in the Event and is therefore at the front end of the audio signal
path.
To create a fade-in or fade-out, click-and-drag left or right on the Fade Flag in the upper left or
right corner of an Audio Event. By default, a linear fade will be created over the length you
have moved the Fade Flag. Fade times, as well as event gain, can also be edited in the
Inspector for any selected Event.
To change the curve of the fade, click on the Fade Curve box in the middle of the fade curve
and drag up or down. The fade curve will determine how quickly or slowly the fade occurs and
changes over time. If you press and hold [Shift] while editing the fade length or the curve, you
can edit both at once. Dragging up or down edits the curve, and dragging left or right changes
the length.
It is also possible to drag a complete crossfade left or right, or up or down, in order to change
the location and characteristics of the fade. Float the mouse to the center of the crossfade
until the Hand icon appears, then click and drag to adjust. Dragging left or right will adjust the
location of the fade, extending or shortening the crossfaded events. Dragging up or down will
alter the shape of the crossfade.
To adjust the overall volume level of an Audio Event, click on the volume box in the center of
the volume envelope and drag up or down. As you adjust the volume envelope, the audio
waveform will be redrawn to approximate the effect of the adjustment.
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