Adobe CAPTIVATE 5 Help Manual page 140

Last updated 4/22/2010
•
Near CD Bitrate (96 Kbps)
second of a recording, which is of a near-CD quality. By default, this option is selected.
•
FM Radio Bitrate (64 Kbps)
of a recording, which is of FM radio quality.
• Specifies the amount of audio information that will be stored per second of a recording, which
Custom Bitrate
is of a user-defined quality. You can drag the slider bar to set the required bitrate.
The sampling frequency that is used when the audio file is published. Encoding frequency is
Encoding Frequency
the sampling rate of the audio file. The higher the frequency, the better is the quality of the published audio file.
However, the increase in quality also results in an increase in the size of the audio file. For normal audio files, a
lower frequency might not change the quality of the audio file significantly. However, for higher quality audio files,
like those for music, a higher encoding frequency is desirable.
Note that the encoding frequency does not affect the file that is recorded. Adobe Captivate records and stores all
audio files using the encoding frequency of 44.100 KHz.
The speed at which the encoder converts the WAV file to an mp3 file. Higher encoding speeds
Encoding Speed
might reduce the quality of the final output. The speed of publishing the project might increase when you choose a
higher encoding speed.
Click to display the Calibrate Audio Input dialog box. You are prompted to read a sentence
Calibrate Audio Input
into the recording device if you are using a microphone. Adobe Captivate uses the sample recording to detect
optimal recording sensitivity levels. It is important to calibrate your recording device for optimal sound quality.
Set a time, in seconds, for the audio file to fade in and fade out at the beginning and end of
Fade In and Fade Out
the project.
Lower Background Audio Volume On Slides With Additional Audio
volume on slides that have individual audio files assigned, such as voice-over narration.
The background audio file replays continuously.
Loop Audio
Stop Audio At End Of Project
Calibrate microphone
If you are recording audio for a project, you must set the microphone or recording device to the correct recording level.
This process is called calibrating the recording device. Adobe Captivate can detect optimal microphone and recording
sensitivity levels automatically.
Note: Adobe Captivate must be able to detect a recording device before trying to calibrate. Check that a microphone or
recording device using "line in" is connected to your computer properly and is turned on before calibrating.
Calibration can be manual or automatic.
Auto-calibration
1 In an open project, select Audio > Settings.
2 Click Calibrate Input.
3 In the Calibrate audio input dialog box, click Auto Calibrate.
To set the correct recording device level, read the following sentence into the microphone until the message Input
4
level OK appears:
"I am setting my microphone recording level for use with Adobe Captivate."
DRAFT
Specifies the amount of audio information (in Kbps) that will be stored per unit
Specifies the amount of audio information (in Kbps) that will be stored per second
Stops the background audio when the project ends.
USING ADOBE CAPTIVATE 5
Automatically reduces the background audio
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Audio