Reference Guide

1255
Audio Options dialog—Advanced
Dialog Reference
Disadvantages: higher perceived loudness than Pow-r dither.
• Pow-r 1. Noise-shaped dither. Advantages: less CPU-intensive than Pow-r types 2 and 3,
lower perceived loudness than Rectangular or Triangular. Disadvantages: less noise shaping
than Pow-r types 2 and 3, not recommended for operations where dither will be applied
successively (e.g. bounce and freeze).
• Pow-r 2. Noise-shaped dither. Advantages: lowest perceived loudness, highest quality
settings, recommended for audio export. Disadvantages: highest CPU-intensive settings, not
recommended for operations where dither will be applied successively (e.g. bounce and
freeze).
• Pow-r 3. Same as Pow-r 2 except most CPU-intensive and transparent of all choices.
• Share Drivers With Other Programs. This option allows other software to access device
drivers. When this option is checked, other software can access device drivers when SONAR is
not the focus of Windows.
• Use Multiprocessing Engine. This option is grayed out unless you have a multiprocessor
computer. If you have a multiprocessor computer, check this option if you want SONAR to use
both processors at all times. If you do not check this option, SONAR still uses the second
processor for some tasks.
• Use MMCSS (Windows Vista). This option is grayed out unless you use Windows Vista. This
option gives real-time applications such as SONAR higher priority for resource scheduling (thread
scheduling) under Windows Vista (leave it checked).
• Play Effect Tails After Stopping. When checked, this option causes any effect with a “tail”
(reverb, delay, etc.) to finish playing when playback is stopped.
• Always Open All Devices. With this option checked, SONAR opens all enabled stereo pairs of
audio outputs as soon as you press play or turn on the audio engine. Any pairs that don’t have
any tracks feeding them stream silence, but are still ready for use. So if you then change a track's
output assignment on the fly SONAR doesn’t have to reopen a device, which can cause gaps in
playback.
• Remove DC Offset During Record. With this option enabled, SONAR filters out any DC Offset
disturbances that may be present during recording. See Removing DC Offset for more
information.
• Record Pre-allocate File (seconds). When this option is set to a value greater than zero,
SONAR will pre allocate the file to be recorded to the size specified (in seconds). This means that
the file will not be resized while recording until it reaches the allocated size. The setting has the
potential to reduce disk activity while recording and allows for more possible tracks. The valid
range is 0–14400 seconds and the default value is 0. A reasonable setting would be 10 minutes
(600 seconds) to 30 minutes (1800 seconds).
• Fade On Start (milliseconds). When this option is set to a value greater than zero, starting
playback will cause a gradual fade in of the audio for the specified duration. The valid range is 0–
100000 and the default value is 0.
• Fade On Stop (milliseconds). When this option is set to a value greater than zero, stopping
playback will cause a gradual fade out of the audio for the specified duration. The valid range is
0–100000 and the default value is 0.