Graphics Programs Reference
In-Depth Information
To have Aperture automatically time your
slides so that your show lasts exactly as long
as your audio, choose Fit Slides to Main Audio
Track from the Slideshow Action pop-up
menu. Aperture can also automatically ana-
lyze your audio file to determine where the
beats happen so that your transitions are
guaranteed to happen on beats in the music.
Simply choose Align Slides to Beats from the
Slideshow Action pop-up menu, and Aperture
adjusts your timing. To revert your timing,
select the slide to revert and choose Reset
Selected Slide from the Slideshow Action
pop-up menu.
8.16 The Audio Adjustments HUD allows you to
adjust your audio file's volume.
It's also possible to add a second audio track
to your show. For example, you might have
recorded some narration using Garage Band,
and you'd like it to start with a particular slide.
To add an audio file as a secondary audio
track, select it in the audio browser and drag it
onto an image in Browser. It will appear as a
thin, green bar, as shown in Figure 8.17. To
adjust the in/out points on the second audio track, move your mouse over its endpoints and your
cursor changes to double-arrows. Click and drag to adjust the in/out points. Click and drag the bar
to adjust that point in your slide show that the track starts playing; select it and press Delete to
remove the track.
8.17 A second audio track lets you add
prerecorded narration to your slide show in
addition to background music.
Just like with the main audio track, you can double-click to open the Audio Adjustments HUD.
When adjusting a secondary audio track, you can set how much the main audio track's volume
fades out while the secondary track is playing by selecting Reduce volume of the main track to and
adjusting the slider.
 
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