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13. Operation under ASIO 2.0
13.1 General
We will use Steinberg's Cubase VST as an example throughout this chapter. All information
provided can easily be adopted to other programs.
Start the ASIO software
and select 'System' from
the Audio menu. Select
'ASIO Hammerfall DSP'
as the audio I/O device.
The
'ASIO
system
control' button opens the
HDSP's Settings dialog
(see
chapter
9,
Configuration).
Hammerfall
DSP
also
allows
simultaneous
record and playback of
SPDIF
audio
data
together with record and
playback
in
ADAT
format. Please note that
the
external
SPDIF
devices
have
to
be
running
in
sync,
otherwise recordings will
be corrupted.
Hammerfall DSP supports 'ASIO Direct Monitoring' (ADM). Please note that at this time
Cubase, Nuendo and Logic do not support ADM correctly. Bugfixes should be available soon.
When the sample frequency is set to 88.2 or 96 kHz, the ADAT optical input and output operate
in Sample Split mode, so the number of available channels is reduced from 8 to 4.
13.2 Performance
The 'Audio Performance' settings are especially important. Firstly, the number of channels
should be changed from 8 to 18 so that all the Hammerfall DSP's inputs can be accessed.
A very common problem is insufficient hard disk perfor-
mance. If the first track is missing while recording multiple
tracks, or the error message 'Audio: Record Error' appears,
the disk sub-system is too slow i.e. it is unable to write the
audio data to the disk quickly enough. The problem can
almost always be remedied by changing 'Disk Block Buffer
Size' from the default 64kB to 256kB.
This is especially true if you want to record more than 12
tracks at the same time. 26 tracks are only possible after
changing 'Disk Block Buffer Size' to 256kB (depending on
your computer). Please note that these parameters are only updated after clicking on 'Apply'.
User's Guide HDSP System Multiface © RME
22
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