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CHP. 7 USING MARKERS, REGIONS, AND THE PLAYLIST/CUTLIST
95
Detecting and marking clipping
The clip indicators in the play meters help you determine whether clipping occurs in your file, and you can
use the
Find command to find audio that matches levels you specify. For more control, however, you can use
the detect clipping tool.
From the
Tools menu, choose Detect Clipping to scan a selection of audio for clipping and add markers where
clipping occurs.
Markers can be quickly selected from the list in the Go To dialog. Also, markers are displayed in the Regions
List for quick playback.
1.
Select the audio you want to scan.
2.
From the Tools menu, choose Detect Clipping. The Detect Clipping dialog is displayed.
3.
Choose a setting from the Preset drop-down list or adjust the controls as necessary.
a.
Drag the Threshold slider to determine the sound level you want to find.
b.
Set a value in the Clip Length box to specify how many sequential samples must meet the Threshold
setting to constitute clipping.
4.
Click the OK button.
Sound Forge scans the selection and adds a marker whenever there are a number of sequential samples
(determined by the Clip Length setting) with the same value above the Threshold setting.
Tip:
Use Detect all clip-related plateaus from the Preset
drop-down list to detect clipped peaks that may exist in your
file after decreasing the levels in the file. You can then use the
Pencil tool or the Clipped Peak Restoration tool in the Sony
Pictures Digital Noise Reduction plug-in to restore the clipped
peaks.
Using markers to create regions
Once you have placed markers in a waveform, you can use them to create regions. For more information, see
Inserting regions based on marker positions on page 102.