Apple Soundtrack Pro 3 - Manual (Page 179)

As you drag, the red segment of the tempo envelope moves vertically as the tempo
changes.
Transposing Tagged Audio Clips
Soundtrack Pro includes a large selection of Apple Loops that you can use to add Foley
effects, background ambience, sound effects, and music transitions to your projects.
Apple Loops tagged as looping files automatically match the tempo and key of the project.
When you drag an audio file tagged with key information to the Timeline, Soundtrack Pro
transposes the clip to the project key. You can transpose tagged clips to another key to
create chord progressions from the same audio file or to achieve other musical effects.
You can transpose a tagged clip to any interval from one octave above (+12 semitones)
to one octave below (-12 semitones) its current key.
Note: Soundtrack Pro uses the key tag in the audio file to transpose it. In order to be
correctly transposed, the file must be tagged.
To transpose a tagged audio clip
Do one of the following:
µ
Select the clip, choose Clip > Transpose, then choose the number of semitones by which
you want to transpose the clip up or down.
µ
Select the clip, open the Details tab, then use the Transpose pop-up menu to choose the
number of semitones by which you want to transpose the clip up or down.
Replacing the Source Audio in a Clip
Each audio clip in the Timeline has a set of properties specific to the clip, including
duration, speed, and transposition. You can replace the source audio in the clip while
preserving the clip’s properties. This feature has a variety of uses, such as letting you try
out similar audio files (for example, music beds or sound effects) while maintaining the
clip’s duration, position in the Timeline, and transposition.
For information about properties of audio clips, see Reconnecting Media Files .
To replace the source audio file for a clip
1 In the Timeline, select the clip for which you want to replace the source audio.
179 Chapter 6 Working in the Timeline