PRESONUS AudioBox Stereo Quick Start Manual page 138

5 By default, Studio One's process precision is set at Single (32-bit). You may choose
double precision (64-bit) from the Process Precision drop-down menu.
6 If your computer has multiple processors or processing cores, Enable Multi-Processing
will be checked by default. Unless you experience performance issues, it is
recommended you leave this at the default setting for best performance.
7 When the aforementioned settings are selected, your system's current total input and
output latency, sample rate, and bit depth will be reported below the Audio Setup
menus.
4.2.1 Supported Devices
Studio One supports most audio devices, including ASIO, Core Audio (Mac OS X), Direct Sound
(Windows XP), and WASAPI (Windows Vista/7) devices.
When using a WASAPI audio device in Windows Vista/7, note that WASAPI supports an
Exclusive and Shared mode. In Exclusive mode, lower latency can be achieved but other
applications (such as Windows Media Player) cannot use the audio device at the same time.
Refer to the Windows Control Panel/Hardware and Sound/Sound to configure the options for
your WASAPI device.
4.2.2 Performance Monitor
When setting up your audio device—specifically when determining appropriate Internal or
Device Block Size, or selecting Single or Double Process Precision—you need to take into
account the related performance demands on your computer.
Open the Performance Monitor by selecting it from the View menu, or by clicking on the word
"performance" in the Transport. This monitor will display the current relative overall CPU and
disk performance, as well as the performance of instruments and automation.
When these meters approach or reach the top of their range, you may need to consider
altering your audio-device settings, or changing the Song or Project, to avoid audible clicks
and pops or possible instability. For instance, it is common to lower the Device and/or Internal
Block Size while recording to keep monitoring latency low but then to increase Block Size
while mixing to provide as much CPU headroom as possible for effects processing.
If any playback issues are encountered with third-party virtual instrument or effect plug-ins
that have their own multiprocessor support implementation (e.g., NI Kontakt, FL Studio), it is
recommended that this support be disabled in the plug-ins. In this case, Studio One will
manage all processor scheduling.
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