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If you are exporting a file that was imported in mp3 format, you can export the file using the same settings the file
had when it was imported.
Use Imported mp3 Quality
imported mp3 file with the same settings the file had when it was imported.
Determines the bits per second in the exported sound file. Flash supports 8 through 160 Kbps CBR
Bit Rate
(constant bit rate). When you export music, set the bit rate to 16 Kbps or higher for best results.
Converts mixed stereo sounds to monaural (mono sounds are unaffected by this option).
Preprocessing
Note: The Preprocessing option is available only if you select a bit rate of 20 Kbps or higher.
Determines the compression speed and sound quality:
Quality
•
Yields faster compression but lower sound quality.
Fast
•
Yields somewhat slower compression but higher sound quality.
Medium
•
Yields the slowest compression and the highest sound quality.
Best
Speech compression option
Speech compression exports sounds using a compression that is adapted to speech.
Note: Flash Lite 1.0 and Flash Lite 1.1 do not support the Speech compression option. For content targeting those player
versions, use mp3, ADPCM, or Raw compression.
Controls sound fidelity and file size. A lower rate decreases file size but can also degrade sound quality.
Sample rate
Select from the following options:
•
Acceptable for speech.
5 kHz
•
Recommended for speech.
11 kHz
•
Acceptable for most types of music on the web.
22 kHz
•
The standard CD audio rate. However, because compression is applied, the sound is not CD quality in the
44 kHz
SWF file.
Guidelines for exporting sound in Flash documents
Besides sampling rate and compression, there are several ways to use sound efficiently in a document and keep file
size small:
• Set the in and out points to prevent silent areas from being stored in the Flash file and to reduce the size of the
sound.
• Get more out of the same sounds by applying different effects for sounds (such as volume envelopes, looping, and
in/out points) at different keyframes. You can get a number of sound effects using only one sound file.
• Loop short sounds for background music.
• Do not set streaming sound to loop.
• When exporting audio in embedded video clips, remember that the audio is exported using the global streaming
settings selected in the Publish Settings dialog box.
• Use stream synchronization to keep the animation synchronized to your sound track when you preview your
animation in the editor. If your computer is not fast enough to draw the animation frames so that they keep up
with your sound track, Flash skips frames.
Default setting. Deselect to select other mp3 compression settings. Select to export an
FLASH CS3
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User Guide
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