Adobe 65009626 User Guide - Page 46

Insert silence, Repairing audio, Visually identifying noise

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USING SOUNDBOOTH CS4 42 Editing and repairing audio files Match To File Matches to the average volume of a specific file. Choose this option if one file reflects the target volume you want to achieve. The Account For Perceived Loudness option focuses analysis on midrange frequencies that the ear is most sensitive to. Keep this option selected unless frequency emphasis varies greatly in a file (for example, midrange frequencies are pronounced in a short passage, but bass frequencies are elsewhere). Match To Peak Volume Matches to a peak value you specify. Because this option retains dynamic range, it's a good choice for files you plan to process further, or for highly dynamic audio like classical music. 6 Click Match Volume. 7 Review the reported volume change in each file, and click Close. Insert silence Insert silence to separate different types of program material, or to synchronize an audio file with live broadcasts or video. 1 Do either of the following: • To silence existing audio, select it. • To add a specific duration of silence, position the current-time indicator where you want silence to begin. 2 Choose Edit > Insert > Silence. If you're adding silence, specify a duration in seconds, and click OK. See also "Trim, crop, or delete audio" on page 38 "Raise or lower volume" on page 40 Repairing audio Visually identifying noise In the spectral display, you can quickly identify and select different types of noise. Clicks and crackle, for example, usually appear as bright vertical bars that extend from top to bottom. Hiss, meanwhile, appears as a light-red cloud that extends across the top. Updated 15 July 2009

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42
USING SOUNDBOOTH CS4
Editing and repairing audio files
Match To File
Matches to the average volume of a specific file. Choose this option if one file reflects the target
volume you want to achieve.
The Account For Perceived Loudness option focuses analysis on midrange frequencies that the ear is most sensitive
to. Keep this option selected unless frequency emphasis varies greatly in a file (for example, midrange frequencies
are pronounced in a short passage, but bass frequencies are elsewhere).
Match To Peak Volume
Matches to a peak value you specify. Because this option retains dynamic range, it’s a good
choice for files you plan to process further, or for highly dynamic audio like classical music.
6
Click Match Volume.
7
Review the reported volume change in each file, and click Close.
Insert silence
Insert silence to separate different types of program material, or to synchronize an audio file with live broadcasts or
video.
1
Do either of the following:
•
To silence existing audio, select it.
•
To add a specific duration of silence, position the current-time indicator
where you want silence to begin.
2
Choose Edit
> Insert > Silence. If you’re adding silence, specify a duration in seconds, and click OK.
See also
“
Trim, crop, or delete audio
” on page
38
“
Raise or lower volume
” on page
40
Repairing audio
Visually identifying noise
In the spectral display, you can quickly identify and select different types of noise. Clicks and crackle, for example,
usually appear as bright vertical bars that extend from top to bottom. Hiss, meanwhile, appears as a light-red cloud
that extends across the top.
Updated 15 July 2009