Then please place another RMZLPF.
![](fir21.gif)
Double-click on it and change its parameters.
![](fir22.gif)
Set 1 for Ripple Factor (rp).
![](fir23.gif)
Left click on RMZLPF to select it and right click to choose "Open
a Monitor".
![](fir24.gif)
The reduction ratio has become lower and it's always around -120dB.
![](fir25.gif)
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