Adobe 65009626 User Guide - Page 34

Level meters overview

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USING SOUNDBOOTH CS4 30 Importing, recording, and playing audio Loop Enables looped playback of audio. Record Opens the Record dialog box. (See "Record a new file" on page 21.) See also "Shortcuts for playing and zooming audio" on page 88 Level meters overview To monitor audio amplitude, use the level meters. When you edit individual files, meters appear only in the toolbar. When you mix multitrack files, meters in the toolbar display overall levels, while meters in the Editor panel display track levels. For stereo files, the upper meter represents the left channel, and the lower meter represents the right channel. For surround-sound (5.1) files, six meters represent the following channels from top to bottom: Left, Right, Left Surround, Right Surround, Center, and LFE. A B C D Level meters for stereo file A. Left channel B. Right channel C. Peak indicator D. Clip indicators The meters show signal levels in dBFS (decibels below full scale), where a level of 0 dB is the maximum amplitude possible before clipping occurs. All levels below that maximum are expressed as negative numbers. To identify amplitude at a specific point in the meters, position the mouse over that point, and note the value in the tool tip. To the right of the meters, Soundbooth indicates the peak level since playback last began. If clipping occurs, this value is replaced by the word Over, and red clip indicators appear in the meters. To clear clip indicators and peak amplitude values, click them, or right-click the meters and choose Reset Meters. See also "Understanding bit depth" on page 9 Updated 15 July 2009

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30
USING SOUNDBOOTH CS4
Importing, recording, and playing audio
Loop
Enables looped playback of audio.
Record
Opens the Record dialog box. (See “
Record a new file
” on page
21.)
See also
“
Shortcuts for playing and zooming audio
” on page
88
Level meters overview
To monitor audio amplitude, use the level meters. When you edit individual files, meters appear only in the toolbar.
When you mix multitrack files, meters in the toolbar display overall levels, while meters in the Editor panel display
track levels.
For stereo files, the upper meter represents the left channel, and the lower meter represents the right channel. For
surround-sound (5.1) files, six meters represent the following channels from top to bottom: Left, Right, Left Surround,
Right Surround, Center, and LFE.
Level meters for stereo file
A.
Left channel
B.
Right channel
C.
Peak indicator
D.
Clip indicators
The meters show signal levels in
dBFS
(decibels below full scale), where a level of 0
dB is the maximum amplitude
possible before clipping occurs. All levels below that maximum are expressed as negative numbers.
To identify amplitude at a specific point in the meters, position the mouse over that point, and note the value in the
tool tip. To the right of the meters, Soundbooth indicates the peak level since playback last began. If clipping occurs,
this value is replaced by the word
Over
, and red clip indicators appear in the meters.
To clear clip indicators and peak amplitude values, click them, or right-click the meters and choose Reset Meters.
See also
“
Understanding bit depth
” on page
9
A
B
D
C
Updated 15 July 2009