Re: zero-phase iir_filter block?

[Marcus D. Leech]

On 12/30/2019 07:25 PM, Laura Arjona wrote:

Hi all,

Is the zero phase- iir_filter  block in gnuradio?

I thought the iir_filter was zero-phase, but then I get different results with iir_filter(b,a,signal) and the matlab function filtfilt(b,a,x).

Thanks and my best wishes for 2020.

Best

Tne IIR filter in Gnu Radio is a classical uncompensated IIR filter.