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Chapter 13. Sound: The Fifth Dimension > Synchronizing Sound to Animation

Synchronizing Sound to Animation

There's no sense talking around the obvious: Flash and audio fundamentally are not well coordinated. In other places throughout the book, you read about the sometimes-disparate playback anomalies for audio in Flash, but the issue truly is pervasive. Even displays at the Macromedia trade booth highlighting Flash 5 get out of sync. It is an imperfect world.

In theory, the reason should be fairly obvious. While Flash plays based on its internal frame rate (and even this varies sometimes due to the hardware), audio plays at a very fixed and rigid tempo. If you slow down a Flash animation, an imperceptible deviation might occur in the animation playback. Slow down an audio track, and you send a soprano to a baritone. This basic difference between the two mediums has been the bane of any veteran Flash developer at one time and can even be a catalyst for some folks to migrate to Director to complete a presentation.


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