Korg Soundlink DRS OASYS PCI User Manual page 131

Reference
NOTE: The Audio Buffer Size affects only the CPU input-to-output latency–the
amount of time that it takes to route audio from the OASYS PCI inputs, through a
CPU-based digital audio program (and that program's CPU-based real-time
effects), back to the OASYS PCI outputs.
DSP input-to-output latency–the amount of time that it takes to trigger notes when
playing OASYS PCI synths, or to route live audio inputs through OASYS PCI
effects–is unaffected by the Audio Buffer Size.
Do you need to minimize latency?
There are two situations in which minimum CPU latency is desirable:
•
•
If you are doing either of these two things, then you may wish to adjust the Audio
Buffer Size and ASIO Out Latency (Windows only) parameters to the lowest
settings which work with your computer system.
If you are not doing either of these two things, then you should leave the Audio
Buffer Size and ASIO Out Latency (Windows only) parameters set to their default,
maximum values.
ASIO Out Latency (Windows)
2, 3, and 4 buffers. This sets the number of audio buffers (see "Audio Buffer Size,"
above) used for ASIO output. This affects ASIO output only; it does not affect ASIO
input, or MME input and output. 4 buffers is the default setting.
The total output latency is equal to the buffer size multiplied by the number of
buffers. For instance, with an Audio Buffer Size of 128 samples and ASIO Out
Latency set to 2 buffers, the total ASIO output latency is 256 samples, or about 5
milliseconds at 48 kHz.
Depending on the speed of the CPU, the amount of host-based plug-ins you are
running, the speed of the audio disk, and other factors, some computers may
require higher settings than others. Settings which are too small may cause clicks or
other audio artifacts.You may need to experiment to find the best setting for your
system.
After changing this setting, you'll need to reboot before the new settings take effect.
Mute All
Pressing this button mutes all the inputs, so that all inputs receive only the purest,
cleanest, most eminently silent digital black. Pressing the button again restores the
previous settings of the window.
OASYS PCI
Playing CPU-based synths, such as VST instruments, from a MIDI controller
Using CPU-based effects, such as VST or DirectX, to process realtime audio
inputs (such as playing a guitar through VST effects)
ASIO Control Panel/ Audio Settings
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