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25.2 DVD-Playback (AC-3/DTS)
AC-3 / DTS
When using popular DVD software players, their audio data stream can be sent to any AC-3/DTS
capable receiver via the ADI-2/4 Pro SE.
!
The sample rate must be set to 48 kHz in the ADI-2/4 Pro SE Settings dialog, or the software
will only playback the down-mixed analog signal via SPDIF.
In some cases an ADI-2/4 Pro SE output device has to be selected in >Control Panel / Sound /
Playback< and be set as Default, or the software will not recognize it.
The DVD software's audio properties now show the options 'SPDIF Out' or similar. When selecting
it, the software will transfer the non-decoded digital multi-channel data stream to the ADI-2/4 Pro
SE's AES and SPDIF output.
Note: This SPDIF signal sounds like chopped noise at highest level. Therefore the ADI-2/4 Pro
SE will automatically mute the analog outputs.
Multi-channel
DVD player software can also operate as software decoder, sending a DVD's multi-channel data
stream directly to the analog or digital outputs of the ADI-2/4 Pro SE. For this to work set CC-
Mode under SETUP - Options - Device Mode / DSD to Multi-channel, and the WDM playback
device 'Loudspeaker' of the ADI-2/4 Pro SE in >Control Panel/ Sound/ Playback< as 'Standard'.
Additionally the loudspeaker setup, found under >Configuration<, has to be changed from Stereo
to 5.1 Surround.
The software's audio properties now list several multi-channel modes. If one of these is selected,
the software sends the decoded analog multi-channel data to the ADI-2/4 Pro SE. On some soft-
ware it is not necessary to select the Loudspeaker in the Sound panel.
25.3 Multi-client Operation
RME audio interfaces support multi-client operation. Several programs can be used at the same
time. The formats ASIO and WDM can even be used on the same playback channels simultane-
ously. As WDM uses a real-time sample rate conversion (ASIO does not), all active ASIO software
has to use the same sample rate.
Inputs can be used from an unlimited number of WDM and ASIO software at the same time, as
the driver simply sends the data to all applications simultaneously.
RME's sophisticated tool DIGICheck operates like an ASIO host, using a special technique to
access playback channels directly. Therefore DIGICheck is able to analyse and display playback
data from any software, no matter which format it uses.
25.4 Multi-interface Operation
The current driver supports up to three RME devices of the MADIface series. All units have to be
in sync, i.e. have to receive valid digital sync information. The ADI-2/4 Pro SE can therefore be
used simultaneously with a MADIface XT, MADIface USB, MADIface Pro, Fireface UFX+, or just
another ADI-2/4 Pro SE. Under ASIO all devices are presented as one ASIO device with all avail-
able channels as I/Os.
If one of the units is set to clock mode Master, all others have to be set to clock mode Slave, and
have to be synced from the master by feeding ADAT, AES or SPDIF. The clock modes of all units
have to be set up correctly in their Settings dialog.
User's Guide ADI-2/4 Pro SE – v 1.0
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