Instruction Manual

874 Improving Audio Performance
Improving Performance with Digital Audio
Try higher latency settings:
•Select Options-Audio, and click the General tab. Move the Mixing
Latency Buffer Size slider control to the right in small increments until
you see the value to the right of the slider increase; close the dialog
(click "OK") and re-test your project after each increment.
• If problem(s) continue, move the slider control back to its original
position, and try increasing the number in the Buffers in Playback
Queue textbox. (This value starts out at 4; try increasing it to 5, 6, 7, or
8). Close the dialog (click “OK”) and re-test your project after each such
change.
• The total effective latency is displayed below the slider; it is determined
by multiplying the per-buffer latency time (in msec) by the number of
buffers in the playback queue.
• If problem(s) continue, click the Advanced tab in this dialog, and turn off
the WavePipe Accelerator checkbox. Click OK to close the dialog and
re-test your project.
• If problem(s) persist, turn the WavePipe Accelerator checkbox back on,
and continue.
Your hard disk may be excessively fragmented
Audio data can be processed most efficiently if it is arranged in consecutive
physical locations on your hard drive. Over time, the chunks become
distributed at various discontiguous locations on your disk, which makes it
more time consuming for SONAR to access the chunks. This extra access
time can interfere with smooth audio recording and/or playback.
Try defragmenting the hard disk:
• Make sure SONAR, and the Wave data directory are not installed on a
compressed hard disk.
• Defragment your hard disk. If you have more than one hard disk in your
computer, identify the disk which contains the SONAR Data directory
(this is where your projects’ audio clips are stored.) To defragment the
hard disk, exit SONAR first. Then, select Start-Programs-System
Tools-Accessories-Disk Defragmenter. We recommend that you
backup your hard disk before defragmenting it.
Your project file may be excessively fragmented
Audio data can be processed most efficiently if it is arranged in consecutive
physical locations on your hard drive. During normal SONAR usage, a
project's audio data can become fragmented into chunks stored at