User Manual

User's Guide Babyface Pro © RME

9.2 DVD-Playback (AC-3/DTS)

AC-3 / DTS

When using popular DVD software players like WinDVD and PowerDVD, their audio data

stream can be sent to any AC-3/DTS capable receiver using the Babyface Pro's SPDIF output.

For this to work, the WDM SPDIF device of the Babyface Pro has to be selected in >Control

Panel/ Sounds and Multimedia/ Audio< or >Control Panel/ Sound/Playback<. Also check 'use

preferred device only'.

The DVD software's audio properties now show the options 'SPDIF Out' or similar. When select-

ing it, the software will transfer the non-decoded digital multichannel data stream to the Baby-

face Pro.

Note

: This 'SPDIF' signal sounds like chopped noise at highest level. Try to avoid mixing and

routing the signal to your loudspeakers, as they might get damaged.

Multichannel

PowerDVD and WinDVD can also operate as software decoder, sending a DVD's multichannel

data stream directly to the analog outputs of the Babyface Pro. For this to work select the WDM

playback device ’Loudspeaker’ of the Babyface Pro in

XP: >Control Panel/ Sounds and Multimedia/ Audio<, and check 'Use only default devices'.

Additionally the loudspeaker setup, found under >Volume/ Speaker Settings/ Advanced< has to

be changed from Stereo to 5.1 Surround.

Since Vista: >Control Panel/ Sound/ Playback < as ‘Standard’. Additionally the loudspeaker

setup, found under >Configuration<, has to be changed from Stereo to 5.1 Surround.

PowerDVD's and WinDVD's audio properties now list several multichannel modes. If one of

these is selected, the software sends the decoded analog multichannel data to the Babyface

Pro. TotalMix can then be used to play back via any desired output channels.

The typical channel assignment for surround playback is:

1 - Left

2 - Right

3 - Center

4 - LFE (Low Frequency Effects)

5 - SL (Surround Left)

6 - SR (Surround Right)

Note 1

: Selecting the Babyface Pro to be used as system playback device is against our rec-

ommendations, as professional interfaces should not be disturbed by system events. Make sure

to re-assign the selection after usage or to disable any system sounds (tab Sounds, scheme

'No audio').

Note 2

: The DVD player will be synced backwards from the Babyface Pro. This means when

using AutoSync and/or word clock, the playback speed and pitch follows the incoming clock

signal.