RME Audio Hammerfall HDSPe RayDAT, User Manual

Page: 19 / 78

User's Guide HDSPe RayDAT
© RME
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12. Operation and Usage
12.1 Playback
The HDSP system can play back audio data only in supported modes (channels, PCM) and
formats (sample rate, bit resolution). Otherwise an error message appears (for example at 22
kHz and 8 bit).
In the audio application being used, HDSP must be selected as output device. This can often be
found in the
Options, Preferences or Settings menus under Playback Device, Audio Devices,
Audio etc.
We strongly recommend switching off all system sounds (via >
Control Panel /Sounds <). Also
HDSP should not be the Preferred Device for playback, as this could cause loss of synchroniza-
tion and unwanted noises. If you feel you cannot do without system sounds, you should con-
sider buying a cheap Blaster clone and select this as
Preferred Device in > Control Panel
/Multimedia /Audio <.
The screenshot to the
right shows a typical
configuration dialog of a
(stereo) wave editor.
After selecting a device,
audio data is sent to
either an ADAT or
SPDIF port, depending
on which has been se-
lected as playback de-
vice.
Increasing the number
and/or size of audio
buffers may prevent the
audio signal from break-
ing up, but also in-
creases latency i.e.
output is delayed. For
synchronized playback
of audio and MIDI (or similar), be sure to activate the checkbox ‘Get position from audio driver’.
Note on Windows Vista/7:
Since Vista the audio application can no longer control the sample rate under WDM. Instead the
user has to work himself through numerous settings, and to set the sample rate to the exact
same value per stereo device.