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User's Guide HDSP System Multiface II © RME
When using more than one HDSP system, all units have to be in sync, see chapter 15. Else a
periodicly repeated noise will be heared.
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!
14. Operation under GSIF (Gigasampler Interface)
Windows 2000/XP
The GSIF interface of the Hammerfall DSP allows direct operation with Gigastudio, with up to
18 channels, 96 kHz and 24 bit. The new GSIF 2.0 is also supported with both audio and MIDI.
Gigastudio requires a lot of the computer’s calculation power. An optimum performance is
achieved with a stand-alone GSIF PC. However, when using the Hammerfall DSP, the latency
is always the same as the one selected for ASIO operation. This can cause performance prob-
lems on slower machines when using GSIF and ASIO at the same time.
Please note that the W2k/XP driver fully supports multi-client operation, including the combina-
tion MME/ASIO. So for example Cubase, Gigastudio and Sonar can be used simultaneously,
provided each of these programs uses its own audio channels exclusively. For example ASIO
could use channels 1/2 and Gigastudio (with GSIF) channels 3/4 simultaneously, and so on.
Simultaneous operation of GSIF and ASIO requires to use different channels. For exam-
ple, if Cubase uses tracks 1/2 these tracks can not be used by Gigastudio.
Common Problems
Please note that Gigastudio is running unexpectedly in the background (thus blocking its as-
signed audio channels), as soon as the Gigastudio MIDI ports are used – even when Gigastu-
dio itself hasn't been started. This causes a lot of confusion, as the driver seems to behave
completely buggy, and the user does not recognize the simple reason for it – for example simul-
taneous operation of ASIO and GSIF on the same channels.
In case Gigastudio loads well, loads gig files too, but won't play at all even when using the vir-
tual keyboard: Go to Hardware/Routing and select a valid MIDI input port. Note that blank is not
valid, but <none> is.