DEWESOFT SIRIUS Series

/
SIRIUS
® 
TECHNICAL REFERENCE MANUAL 



80 kHz and 25 kHz AAF 

See illustration above “ 80 kHz and 25 kHz AAF ” with measured characteristics of the FIR filters with                 
sample rates set to 50 kHz and 200 kHz. 
6.1.6.3. IIR filters 
The last available filters are the IIR filters. In DEWESoft® on the SIRIUS-HS we can choose between 8                  
different filters with variable orders. 
As with previous filters, an anti-aliasing filter with zero phase distortion can be added in tandem with                 
this filter, if enabled in the advanced hardware settings. 

300 Hz Bessel IIR filters with the “Enable alias free filtering on Sirius-HS” option turned on and off 


Example 
Measurement of FIR filter 
SIRIUS
®
V20-1 294 / 336  