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Re: [Discuss-gnuradio] Filter design

From: Daniele Nicolodi
Subject: Re: [Discuss-gnuradio] Filter design
Date: Wed, 23 Jul 2014 14:29:38 +0200
User-agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.6; rv:24.0) Gecko/20100101 Thunderbird/24.6.0

On 23/07/2014 14:01, Daniele Nicolodi wrote:
> 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?

Partially answering my own questions:



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