User Manual

Lynx Mixer Reference
3# Device Settings (OS X Only)
This option provides access to several parameters for fine-tuning the driver performance. The default
settings are appropriate for most conditions of use, but in some cases Lynx Technical Support will suggest
altering these parameters as a troubleshooting option. Settings are organized by specific sample rate ranges
to maximize the performance benefits. Changes must be made while the driver is not active, so make sure
all audio applications are closed before changing Device Settings.
Transfer Size – This parameter controls the size of the packets transferred to and from the card’s buffer.
The Transfer Size should never be more than ½ the size of the Core Audio buffer size. Increasing the
Transfer Size will increase the actual record and play latency, but in some cases can reduce CPU usage and
improve performance
Number of Record Devices – This parameter controls how many stereo Record Devices are active in
the Operating System. The AES16e can present up to 8 Record Devices, which is the default for sample
rates up to 96kHz, and 4 Record Devices are the default for rates over 100 kHz. Reducing the number of
Record Devices can reduce the load on the computer’s processor, thereby potentially improving
performance. Record Devices are presented in numerical order, so if the number of Record Devices for a
given sample rate range has been reduced to 6, then AES16e Record Devices 1-6 will be active, and
Devices 7 and 8 will no longer pass audio.
Number of Play Devices – This parameter controls how many stereo Play Devices are active in the
Operating System. The AES16e can present up to 8 Play Devices, which is the default for sample rates up
to 96kHz, and 4 Play Devices are the default for rates over 100 kHz. Reducing the number of Play Devices
can reduce the load on the computer’s processor, thereby potentially improving performance. Play Devices
are presented in numerical order, so if the number of Play Devices for a given sample rate range has been
reduced to 6, then AES16e Play Devices 1-6 will be active, and Devices 7 and 8 will no longer pass audio.
AES16e User Manual
Page 54