Next, let's try CHBLPF (Chebychev IIR Low Pass Filter). Choose the component
and place it.
![](iir9.gif)
Double-click on CHBLPF and change its parameters. Cutoff Frequency is 2000
and Pass Band Ripple is 1.
![](iir10.gif)
And please open a monitor for CHBLPF.
![](iir12.gif)
Then you can see Pass Band Ripple is 1dB and the reduction ratio at 2000Hz
is -1dB. Understand that Chebychev LPF has some ripple in Pass Band but its slope of Stop Band is
sharp compare to BTWLPF.
![](iir11.gif)
If you want its coefficients, please choose "Tools" -> "Save
Coefficients" on the menu.
![](iir13.gif)
See the coefficients, block diagram and transfer function.
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