Lynx Studio LT-USB - Manual (Page 36)

Page 36 of 45
When using WDM based applications, only the Streaming buffer size parameter contributes
to the overall latency of the system. The ASIO buffer size is ignored. Most WDM
applications also add a large amount of additional latency to ensure clean playback. For this
reason, ASIO is the preferred driver model for pro-audio and low-latency situations.
In order to modify the latency, the “Streaming” buffer size must first be set. Choose the
desired size and click “Apply”. Once the Streaming size is set, you will have various options
for the “ASIO” buffer size. Choose the appropriate size and click “Apply”. Once you have
determined the smallest supported Stream Buffer size, you typically will not have to change
this again. The ASIO buffer size, however, may need to be increased or lowered from time to
time depending on the context of use.
Typical values empirically found to work on modern day machines include:
o Streaming: 1 ms, Asio: 2 ms
o Streaming: 2 ms, Asio: 3 ms
o Streaming: 2 ms, Asio: 4 ms
o Streaming: 2 ms, Asio: 6 ms
If a system is not capable of supporting these values, please see the Troubleshooting section
of this manual.
8.4.2 Macintosh OS X
The Aurora will operate as a Core Audio device under OS X. Core Audio is the dominant
audio driver model for OS X, and is used for media playback applications as well as Pro
Audio applications.
8.4.2.1 OS X Audio Applications
The Aurora/LT-USB can be used as a playback device for most popular multimedia, home
theater and pro audio applications. Some such applications allow selection of specific
playback devices. In these cases, an Aurora output device can be selected from the
appropriate device selection menu.
In cases where the playback software does not provide access to output selections, the default
output devices for the operating system will be used. In OS X, the audio out default device
can be established from Applications > Utilities > Audio MIDI Setup.