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Now what happens with both filters being interconnected in parallel? High- and
lowpass filter work as always. When connected in series to create a bandpass,
the spectrum is being cut from top AND below. In parallel connection, there is a
highpass filtered signal AS WELL as a lowpass filtered signal in existence.
INPUT
OUTPUT
FILTER B: Highpass
FILTER A: Lowpass
Parallel combination of low- and highpass filter
The highpass will remove lower frequencies and the lowpass eliminates high
frequencies for their signal path. Both signals are being mixed and as result a
section in the middle is missing. This is why this filter type is called a notch or
band reject filter.
CUTOFF
Highpass
CUTOFF
Lowpass
LEVEL
FREQ.
Notch filter: The green area is being passed through the filter whereas the read area is rejected.
Again, the
Action Filter 4
is superior to typical notch filters because of its ability
to freely adjust the
CUTOFF
-frequencies as well as the bandwidth for the notch.
Summary of Contents for action filter 4
Page 1: ...Bedienungsanleitung User Guide...
Page 19: ...18...
