Adobe Captivate CS 5.5, Mac, DVD, ENG Specifikace stáhnout pdf (Strana 153)

147

USING CAPTIVATE

Audio

Last updated 9/28/2011

Creating audio in Adobe Captivate is essentially a two-part process. You record audio in WAV format, and then Adobe

Captivate converts the WAV file into an mp3 file. When files are in WAV format, they have a degree of flexibility. You

can edit and adjust them “downward,” compressing them into mp3 files uniquely tailored to their playback scenario.

When working with audio, keep your users in mind. If a user is likely to access the Adobe Captivate project by using

a dial-up modem, use a higher compression/lower sampling rate, such as 56 Kbps. However, if you are distributing the

project on a CD-ROM, you can use a lower compression/higher sampling rate, such as 144 Kbps. In the best

development case, experiment to find the optimal balance between sound quality and file size for your users.

Using Adobe Captivate, you can record an audio file for a single slide, group of slides, or for the entire project.

Note: For slides with unique audio files, the Timeline of the slide is stretched to meet that of the audio file. However, audio

files for a project are cut short if they exceed the project Timeline.

1 In an open project, select Audio > Record to and select one of the options:

Slide Record the audio file for the selected slide.

Slides Record the audio file for a group of slides starting with the selected one. To finish defining the range of slides

included in the group, enter a slide number in the To field of the Record Audio dialog box.

Background Creates background audio for your project. For details, see “Create background audio” on page 151.

Object Sets audio for a selected object on the slide.

2 In the Audio dialog box, configure the following according to your preferences:

SWF Preview The recording window displays a Preview panel where you can view the project as the audio gets

recorded.

Continuous Play Select this option if you want the file to play until the end of all the selected slides or the end of the

project.

Captions and Slide Notes Use these options when you want to record voice-over narration that matches the

caption text or slide note text.

Read aloud the text that you have added to these areas when recording audio.

Record Audio Click the icon to begin recording audio.

Play Audio Click the icon to play the audio file after you have completed the recording.

Stop Audio Click the icon to stop playing the audio file.

Edit tab Lets you make the following changes to the audio file:

• Select portions of the audio file and copy them.

• Delete portions of the audio file.

• Insert silence.

Podcast Export to podcast to save the file in WAV or mp3 format.

Fade In and Fade Out Set a time, in seconds, for the audio file to fade in and fade out at the beginning and end of

the project.

Lower Background Audio Volume On Slides With Additional Audio Automatically reduces the background audio

volume on slides that have individual audio files assigned, such as voice-over narration.

Loop Audio The background audio file replays continuously.

Stop Audio At End Of Project Stops the background audio when the project ends.

Settings Click to open the Audio Settings dialog box, which lets you set recording device and audio quality.

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Adobe Captivate CS 5.5, Mac, DVD, ENG Specifikace Strana 153

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