SIRIUS
®
TECHNICAL REFERENCE MANUAL
6. Measurement
This chapter covers topics that you should be aware of when doing your measurement with SIRIUS®.
6.1. Filtering
This chapter covers the filtering capabilities of the SIRIUS® measurement modules and of the
DEWESoft® measurement software.
6.1.1. Filtering glossary
This chapter describes some important terms related to filtering.
6.1.2. Frequency response
The frequency response of a filter can be classified into a number of different band-forms describing
which frequency bands the filter passes (the passband) and which it rejects (the stop-band). To discuss
the SIRIUS® filtering, we only need to consider 2 types frequency response:
Low pass filter
Low frequencies can pass, high frequencies are attenuated.
High pass filter
High frequencies can pass, low frequencies are attenuated.
SIRIUS
®
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