M-AUDIO Delta 410 - Manual (Page 14)

matter), even if the sample rates are set the same. If the master clock were set to
use the internal crystal, then the incoming S/PDIF audio would have "pops,"
"crackles," and other undesirable audio artifacts present in it. Instead, setting the
master clock to "S/PDIF In" will synchronize the Delta 410 to the S/PDIF input
data and its digital audio will be transferred properly.
Finally, the S/PDIF In option may be used to operate the Delta 410 at
non-standard sample rates. When the S/PDIF option is selected, the Delta 410’s
sample rate will automatically match that of the incoming S/PDIF data stream.
NOTE: When the S/PDIF In is selected as the master clock source, the
Delta 410 mixer’s frequency response will be affected by whatever
sample rates you inject at the S/PDIF In. This is because (1) the digital
mixer operates at the same sample rate as the rest of the board, and
(2) sample rate and frequency response are directly correlated.
Using the Delta 410 with your Music
Software Application
Once the Delta 410’s hardware and driver software are properly installed, it is ready
for use with your music application software. Some of these applications may
require you to highlight or enable the Delta 410 drivers within the program, and
others may have a utility that analyzes or profiles the audio cards in your system and
enables the drivers. Your software should have an audio device driver setup page.
WINDOWS MME AUDIO INPUT DEVICES: All Delta 410 analog and S/PDIF
inputs may be used simultaneously for a total of 4 input channels. Within your
software application(s), the names of the Delta 410 audio input devices are:
PCM In 1/2 Delta-410
S/PDIF In Delta-410
Mon. Mixer Delta-410
The PCM In devices allow recording a stereo stream directly from the specified
analog input pairs. The S/PDIF In device allows you to record a stereo stream
directly from the S/PDIF input. The Mon. Mixer device allows stereo recording
from the digital "monitor" mixer built-into the Delta 410. The audio data
recorded from this device is the mix of input and output streams that is set up in
the Delta Control Panel software’s Monitor Mixer page (see Delta 410 Control
Panel Software section).
Note that all of the input devices are stereo. Your application software may break
these down further to "left" and "right" mono devices. Therefore you may see
them as "Left PCM In 1/2 Delta-410, Right PCM In 1/2 Delta-410", "Left S/PDIF
In Delta-410, Right S/PDIF In Delta-410", or "Left Mon. Mixer Delta-410, Right
Mon. Mixer Delta-410," etc. from within your recording software.
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