Reference Guide

1208 Improving audio performance
Using audio devices in Windows 7
Exclusive mode requires exclusive access to the audio device. Another program will not be able to
use the audio device simultaneously with SONAR.
To enable WASAPI mode in SONAR
1. Go to Edit > Preferences > Audio - Playback and Recording.
2. In the Driver Mode list, select WASAPI.
3. Select the Audio - Devices page tab (Edit > Preferences > Audio - Devices).
4. In the Input Drivers and Output Drivers lists, select the desired input and output ports.
5. Click OK to close the Preferences dialog box.
See also:
“WaveRT updates” on page 1209
MMCSS task profile support
The Multimedia Class Scheduler Service (MMCSS) provides Windows multimedia programs,
including SONAR, with prioritized access to CPU resources for time-sensitive processing.
By default, SONAR uses the MMCSS task profile named Pro Audio. If desired, you can instruct
SONAR to use a custom MMCSS task profile.
Tip: If you select Share Drivers With Other Programs in Edit > Preferences > Audio -
Playback and Recording
, SONAR will relinquish control of the audio device when the program
loses Windows focus.