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Chapter 14. Adding Sound to Your Movies

Chapter 14. Adding Sound to Your Movies

It's amazing how much a classic silent film conveys with just moving pictures and text, but that era is history. Audio is a vital feature of today's Web sites. In Macromedia Flash, movies can incorporate sound, either as an ongoing background element or as a synchronized element that matches a particular piece of action—say, a slapping sound that accompanies a pair of hands clapping.

Flash deals only with sampled sounds—those that have been recorded digitally or converted to digital format. Flash imports AIFF-format files for Mac OS, WAV-format files for Windows, and MP3-format files for both platforms. In addition, with the combination of Flash 5 and QuickTime 4, users on both platforms can import QuickTime movies containing sounds and Sun AUfiles. Mac users can also import WAV, Sound Designer II, and System 7 sounds. Any sounds you import or copy into a movie reside in the movie file's library.

Flash offers a limited form of sound editing. You can clip the ends off a sound and adjust its volume, but you must do other kinds of sound editing outside Flash.

When you publish your finished movie, pay attention to the sampling rate and compression of sounds to balance sound quality with the file size of your finished movie. You learn more about these considerations in Chapter 16.


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