User Manual

User's Guide HDSPe RayDAT © 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 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.