Re: [Discuss-gnuradio] How to get the code of Low pass filter block of gnuradio

[Markus Wirsing]

Hello,

as far as I can see, the low pass filter block only exists in GRC.
The relevant XML description for GRC can be found here:
https://github.com/gnuradio/gnuradio/blob/master/gr-filter/grc/variable_low_pass_filter_taps.xml

The underlying source for firdes can be found here:
https://github.com/gnuradio/gnuradio/blob/master/gr-filter/lib/firdes.cc

And the code for an fir-filter here:
https://github.com/gnuradio/gnuradio/blob/master/gr-filter/lib/fir_filter_XXX_impl.cc.t

Oddly enough, I couldn’t find out how the grc xml file references the
fir filter itself. The firdes seems to only return the necessary taps.
Maybe someone someone with more experience in reading GRC XML files
(is their format documented somewhere?), can clear that up.

Markus

Am 07.04.2018 um 11:29 schrieb PRIYANKA PRIYADARSHINI:
> Hello,
> 
> I need to know the code of LPF BLOCK of grc. 
> 
> How and where can I find it?
> 
> Thanks,
> Priyanka
> 
> 
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