Synchronization
Operation modes
The TRACE PRO AE can be operated in three
modes. By choosing one of these options, you
define which maximum sample rate the TRACE
PRO AE can be operated with. This also affects the
number of aux-sums available besides the master-sum. In 192 kHz Mode
no additional mix sum besides the master sum is available. Therefore, in
this mode, the mixer and the Output Control do not offer any aux knobs or
buttons. When choosing the option “samplerates up to 48 kHz” there will
be 6 aux-sums available. When choosing the option “samplerates up to 96
kHz” there will be 2 aux-sums available.
Start/Stop synchronization
The start/stop synchronization can be turned on or
off for all audio devices. If this option is active, the
audio data transfer of all audio devices is started
and stopped simultaneously.
What effect does that have?
Let’s suppose you wish to play back two stereo audio tracks from an audio
application on different devices of the TRACE PRO AE (“TRACE PRO
AE 1-2” to “TRACE PRO AE 3-4”). If all devices would be started and
stopped asynchronously, it could happen, that track one (here: “TRACE
PRO AE 1-2”) starts first with playing back, and track two (here: “TRACE
PRO AE 3-4”) starts last with playing back. This offset can distinctively be
hearable. But if you choose “synchronous start/stop” the playback of all
tracks will start sample precise. There is no offset between (“TRACE PRO
AE 1-2” to “TRACE PRO AE 3-4”. The same applies for a recording
situation.
Z
You can activate the
„classical“ MME drivers
in the system settings
under “Audio Options”.
This option is only relevant, when working with
“classical” MME drivers. In case of ASIO or
GSIF, the synchronization is automatically
ensured. For WDM/DirectSound the start/stop
synchronization is, according to the
specifications, not possible.
29
