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Chapter 13. Adding Sound > Synchronizing Sound to Actions

Synchronizing Sound to Actions

Most sounds in Director movies don’t need to be precisely synchronized. If you have background music playing while action is happening on the Stage, it usually doesn’t matter whether particular points in the music coincide with particular points in the action.

Occasionally, however, you do want sounds to be synchronized with events on the Stage. For example, you may have an animation of a ball bouncing, and you want an impact sound to be heard each time the ball hits the floor (Figure 13.16). In this case, you can note the frames in which the ball hits the floor, and place a sound sprite in each of those frames (Figure 13.17). Though this technique works well with brief sounds, it doesn’t work nearly as well with longer sounds, which often take an unpredictable amount of time to load into memory or to begin streaming.


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