Chapter 12
320
Importing internal and linked sounds
Director handles sounds as either internal or linked. You can determine whether a sound is
internal or linked when you import it. Each type of sound has advantages for different situations.
Director stores all the sound data for an internal sound cast member in a movie or cast file and
loads the sound completely into RAM before playing it. After an internal sound is loaded, it plays
very quickly. This makes internal sound best for short sounds, such as beeps or clicks, that recur
frequently in your movie. For the same reason, making a large sound file an internal sound is not
a good choice because the sound might use too much memory.
Director does not store sound data in a linked sound cast member. Instead, it keeps a reference to
a sound file’s location and imports the sound data each time the sound begins playing. Because
the sound is never entirely loaded into RAM, the movie uses memory more efficiently.
Also, Director streams many sounds, which means it begins playing the sound while the rest of
the sound continues to load from its source, whether on disk or over the Internet. This can
dramatically improve the downloading performance of large sounds. Linked sounds are best for
longer sounds such as voice-overs or nonrepeating music.
Director can stream the following sounds:
•
QuickTime, Shockwave Audio, and MP3 sounds that are linked from a URL
•
QuickTime, Shockwave Audio, MP3, AIFF, and WAV sounds that are linked to a local file
Director imports AIFF and WAV sounds (both compressed and uncompressed), AU, Shockwave
Audio, and MP3. For best results, use sounds that have 8- or 16-bit depth and a sampling rate of
44.1, 22.050, or 11.025 kHz.
To import a sound:
1
Select File > Import.
2
Select sound files to import.
3
To determine whether the imported sounds are internal or linked, select a Media option:
Standard Import
makes all the selected sounds internal sound cast members.
Link to External File
makes all the selected sounds linked.
4
Click Import.
Note:
If you’re authoring on a Macintosh computer that has an audio input or attached microphone, you can record
sounds directly into a movie’s cast by selecting Insert > Media Element > Sound. The Sound command opens the
Macintosh sound recording dialog box. Director for Windows has no equivalent feature.
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