ALESIS Hammerfall DSP System - Manual (Page 18)

18
User's Guide HDSP MADI © 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 as Preferred Device in >Control Panel
/Multimedia /Audio<.
The screenshot to the
right shows a typical
configuration dialog as
displayed by a (ste-
reo) wave editor. After
selecting one of the 32
playback devices,
audio data is sent to
the according 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 play-
back of audio and
MIDI (or similar), be
sure to activate the checkbox ‘Get position from audio driver’.
The HDSP MADI allows sample rates of up to 96 kHz via MADI. In this mode, only channels 1
to 32 are available.