Alesis Hammerfall DSP System 用户手册

 

 
22                            

User's Guide HDSP MADI

 © RME

 

 

13. Operation under ASIO 2.0 

 

 
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, Configuration). 
 
Hammerfall DSP supports 
ASIO Direct Monitoring 
(ADM). Please note that 
currently Nuendo, Cubase 
and Logic either do not 
support ADM completely 
or error-free. 
 
Using emulated MIDI driv-
ers often causes a drift 
and delay between audio 
and MIDI. You should use 
non-emulated (MME) MIDI 
ports in such a case. 
 
At a sample rate of 88.2 or 
96 kHz, the number of 
channels available at the 
MADI input and output is 
halfed. 
 
 

13.2 Known Problems 

 
If a computer does not provide sufficient CPU-power and/or sufficient PCI-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, aften 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'). 
 
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!