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444 Lecture Notes
Flash 5 Lecture
Notes
Adding
Sound To Your Movies (Chapter 14)
Please refer
to the Digital Audio for Multimedia Projects
lecture note for for steps for digitizing audio for Flash use.
- Flash
imports AIFF (Mac format), WAV (Windows format) and MP-3 files for both
platforms. With Quicktime 4, both platforms can import Quicktime movies
containing sounds and Sun AU files. For best results I would stay with
AIFF, WAV and MP-3 files.
- Flash
has limited sound editing features. Use dedicated sound editing software
such as Macromedia's SoundEdit 16 for more control in the sound editing
environment.
- Using
Sounds in Flash:
use the Sound panel to add sounds to movies with keyframes
- Importing
Sounds: you must first import a sound to the Library via the File>
Import menu. To hear a sound, select it within the Library and click
the play button at the top right of the waveform.
- Independent
Sounds vs. Synchronized Sounds:
unsynchronized sounds play independently of the frames of the movie
and can continue playing after the movie ends. These are referred to
as event sounds and are initiated on a specific keyframe. Depending
on the system, the time it takes the sound to play can vary. Synchronized
sounds or streaming sounds play entire sound clips with specific
frames. Flash does this by breaking the sound into smaller pieces and
attaching a piece to to a specific frame.
- Organizing
Sounds in Separate Layers:
it is easier to work with sounds if you locate them on their own layer.
- Adding
the Sounds to Frames:
set a keyframe for your sound to initiate at. Drag the sound from the
Library to either the stage or to the layer in the Timeline (my preference).
Although sounds show no presence in the Stage itself, you will see a
tiny waveform appear in the layer of the timeline where it was placed.
- Adding
Sounds to Buttons:
audio feedback in association with a button helps to enhance the button's
effect. Drag a sound onto either the Over state or Down state of a button
keyframe.
- Synching
Sounds in Movies: There are 4 settings for Cinching sound in the Sound
panel: Event, Start, Stop and Stream. You must use a keyframe in association
with these settings.
- Event
Sounds:
these sounds play in their own timeline. Flash synchronizes the beginning
of an event sound with a specific keyframe and the sounds plays until
the end of the sound clip or until the clip encounters an instruction
to stop playing that specific or all sounds.
- Start
Sounds:
these behave just like event sounds with one important difference: Flash
does not play a new instance of that sound if the sound is already playing.
Set the Sync to Start in looping movies to avoid multiple instances
of a sound from playing over each other.
- Streaming
Sounds:
streamed sounds are specifically geared for playback over the web. Set
the Sync to Stream for this feature. Keep in mind that if the user's
connection is slow, Flash will sacrifice some visuals in your movie
to match the sound and images as closely as possible. To avoid this
scenario, you can Preload a movie before it starts. See pgs. 439-442
for more info.
- Stopping
Sounds:
to stop the playback of a sound, set the Sync to Stop at a specific
keyframe.
- Note:
This works well when you are using a looping background sound and
need to switch to a new scene that will load a new background sound
to play. Otherwise, the original looping sound from the first scene
will play over the one in the new scene until it has finished looping.
- Looping
Sounds: set the number loops in the Sound panel. There is no way
to set a sound to infinity.
- Editing
Sounds:
from the Sound panel's pop-up Effect menu you can set simple fades for
your sounds. See pgs. 428-431 for more detail.
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