RME Audio Hammerfall HDSPe AES, User Manual

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User's Guide HDSPe AES
© RME
13. Operation under ASIO
13.1 General
Start the ASIO software and select
ASIO Hammerfall DSP as the audio I/O device. The 'ASIO
system control' button opens the HDSP's Settings dialog (see chapter 11 / 18, Configuration).
The HDSPe AES supports
ASIO Direct Monitoring (ADM).
The HDSPe AES’ MIDI I/O can be used with both MME MIDI and DirectMusic MIDI.
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.
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 HDSPe system, all units have to be in sync, see chapter 14. 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
HDSPe AES supports both MME MIDI and DirectMusic MIDI. It depends on the used applica-
tion which one will work better.