With time and usage, hard drives become fragmented, leading
to discontiguous files and slow access. This is particularly true for
older hard drives. Since Sound Forge Pro software is hard drive intensive,
faster disk access equates better performance. Therefore, the initial
step in improving system performance is hard drive defragmentation.
The Windows Disk Defragmenter should be run prior to using
Sound Forge Pro software.
The playback buffer size determines the amount of RAM used
for playing from the hard drive. A buffer size of 0.10 seconds is recommended,
but increased buffering may be necessary if you detect gaps during playback.
Increasing the total buffer size requires additional memory.
Combined with a large preload size, this may result in a delay when starting
and stopping playback.
From the Options menu, choose Preferences. The Preferences
dialog appears.
Click the Audio tab.
Use the
Playback buffering slider to configure an appropriate buffer size
value and click OK. If you're using an ASIO device, click the Advanced
button to display the Advanced Audio Configuration dialog, and then click
the Configure
button to edit your device settings.
If you experience gapping during playback and the channel
meters are displayed, turn them off by choosing Channel
Meters from the View menu.
If you experience gapping during recording and you have
the Monitor
check box selected in the Record dialog, clear
the check box to turn off the record meters.
If you experience gapping during playback or your computer
just seems to be bogging down during playback, try turning on Passive
Update. This will force the video and time displays to update only
if there is time to do so. In most cases you won't be able to tell if
it is missing some updates.
From the Options menu, choose Time Display, and
choose Passive Update
from the submenu.
From the Options menu, choose Video, and choose
Passive Update
from the submenu.
If
your video has been opened from a slow device, such as a CD-ROM or network
drive, Sound Forge Pro may have trouble accurately playing back the audio
and video in sync. You should always copy your video files to a fast hard
drive.
Following
are tips that can help when trying to synchronize the audio and video:
After assembling or editing the audio
you wish to use with your video, place markers during video playback to
correspond to any major synchronization points. You can locate a particular
frame by dragging the cursor along the audio if the Video
Preview window is open or the Animate
Video Strip option is enabled. After primary locations have been identified,
drag your audio to these markers to mix, paste, and crossfade audio.
Features such as Insert
Silence, Delete/Clear, and Time
Stretch are commonly used to correct synchronization. Another useful
trick is to create a region representing the offset between a video frame
and audio event. Then you can enable Lock
Loop/Region Length and drag the offset region to a preceding silent
section. Use the region as a template for adjusting the audio stream lengtheither copying and pasting
to insert time or deleting to remove time.