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From: | Tom Rondeau |
Subject: | Re: [Discuss-gnuradio] Filter design |
Date: | Wed, 23 Jul 2014 09:46:23 -0400 |
On 23/07/2014 14:01, Daniele Nicolodi wrote:Partially answering my own questions:
> Hello,
>
> GNURadio offers three different interfaces to design filters from Python
> code: gnuradio.filter.firdes.xxx, gnuradio.filter.firdes.xxx_2, and
> gnuradio.filter.optfir.xxx.
>
> The three interfaces use different parameters to specify the filter
> properties, but the only obvious difference is that the optfir is coded
> in python and thus not available to be used elsewhere.
>
> Which one is recommended to use? Can anyone suggest a reference that
> explains how the filter taps are computed?
>
> In my data analysis code I usually use Butterworth filters. If there is
> any analogy, how do those map to the filters designed with the above tools?
http://gnuradio.squarespace.com/examples/2010/9/12/basic-filtering.html
Cheers,
Daniele
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