User Manual

3.0 Connecting to a Computer or iOS Device
3.4 Windows PreSonus Driver Control Panel
AudioBox
™
iOne and iTwo
Owner’s Manual
15
• Sample Rate Selector. Lets you set the sample rate to 44.1, 48, 88.2, or 96 kHz.
Although a higher sample rate results in better recording quality, it does increase
the le size and the amount of system resources needed to process the audio.
Power User Tip: Changing the sample rate will produce a momentary popping
noise. Because of this, it is recommended that you turn the Main and Phones
volumes down on your AudioBox prior to changing the sample rate.
• ASIO Buer Size. Allows you set the buer size from 64 to 2,048 samples.
Power User Tip: You should set your buer size prior to launching your host application.
Setting your buer size to 64 or 128 may have a performance eect on your computer.
The buer size determines the roundtrip time it takes audio data to
be converted from analog to digital and back to analog. As a general
rule, the higher the buer size, the better the system performance, but
the less playable virtual instruments and the like become.
In general, 512 samples (11 to 12 milliseconds) will provide you
with a large enough buer for optimum system performance but
small enough to minimize latency and be unobtrusive.