User's Guide HDSP AES-32
© RME
23
13. Operation under ASIO 2.0
13.1 General
Start the ASIO software
and select
ASIO Hammer-
fall DSP
as the audio I/O
device. The 'ASIO system
control' button opens the
HDSP's Settings dialog
(see chapter 11 / 19, Con-
figuration).
13.2 Known Problems
If a computer does not provide sufficient CPU-power and/or sufficient PCIe-bus transfer rates,
then drop outs, crackling and noise will appear. We recommend to deactivate all PlugIns to
verify that these are not the reason for such effects.
Additional hard disk controllers, both on-board and PCI based, often violate the PCI specs. To
achieve the highest throughput they hog the PCI bus, even in their default setting. Thus when
working with low latencies heavy drop outs (clicks) are heard. Try to solve this problem by
changing the default setting of the controller (for example by reducing the 'PCI Bus Utilization').
Another common source of trouble is incorrect synchronization. ASIO does not support asyn-
chronous operation, which means that the input and output signals not only have to use the
same sample frequency, but also have to be in sync. All devices connected to the Hammerfall
DSP must be properly configured for Full Duplex operation. As long as SyncCheck (in the Set-
tings dialog) only displays
Lock
instead of
Sync
, the devices have not been set up properly!
When using more than one HDSP system, all units have to be in sync, see chapter 15. Else a
periodically repeated noise will be heard.
Hammerfall DSP supports
ASIO Direct Monitoring
(ADM). Please note that currently Nuendo,
Cubase and Logic either do not support ADM completely or error-free. The most often reported
problem is the wrong behaviour of panorama in a stereo channel.
In case of a drift between audio and MIDI, or in case of a fixed deviation (MIDI notes placed
close before or behind the correct position), the settings in Cubase/Nuendo have to be
changed. At the time of print the option 'Use System Timestamp' should be activated. The
HDSP AES-32 supports both MME MIDI and DirectMusic MIDI. It depends on the used applica-
tion which one will work better.
Summary of Contents for Hammerfall HDSP AES-32
Page 5: ...User s Guide HDSP AES 32 RME 5 User s Guide HDSP AES 32 General...
Page 27: ...User s Guide HDSP AES 32 RME 27...
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Page 39: ...User s Guide HDSP AES 32 RME 39 User s Guide HDSP AES 32 Connections and TotalMix...
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Page 69: ...User s Guide HDSP AES 32 RME 69 User s Guide HDSP AES 32 Technical Reference...
