RME Audio Hammerfall HDSPe MADIface, User Manual

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18
User's Guide HDSPe MADIface
© RME
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 one as
Preferred Device in > Control Panel
/Multimedia /Audio <.
The screenshot to the
right shows a typical
configuration dialog as
displayed by a (stereo)
wave editor. After se-
lecting one of the 32
playback devices, audio
data is sent to the ac-
cording audio channels.
Increasing the number
and/or size of audio
buffers may prevent the
audio signal from
breaking up, but also
increases latency i.e.
output is delayed. For
synchronized playback
of audio and MIDI (or
similar), be sure to acti-
vate the checkbox ‘Get
position from audio driver’.
The MADIface allows sample rates of up to 192 kHz via MADI. In this mode, only channels 1 to
16 are available.
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 (up to 32 with a MADI card!), and to set the
sample rate to the exact same value per stereo device.