Re: [Discuss-gnuradio] Channelizing

[Marcus D. Leech]

On 06/24/2011 01:14 AM, Colby Boyer wrote:
>
>
>
> Hi Marcus,
>
> Check out a pfb channelizer! 
>
> gnuradio-core/src/python/gnuradio/blks2impl/pfb_channelizer.py is a
> nice python wrapper for the class and gr_pfb_channelizer_ccf is the
> C++ name.
>
> Also if you need to carve out a a shifted part of the spectrum, use
> the gr_freq_xlating_fir_filter_*** block.
>
> These are polyphase implementations so they should be computationally
> efficient. Lastly, if you need even more efficiency you can see if
> they are doing the fft implementation of filtering (not sure if they
> are vs standard computation). As you know, there is the difference
> between NlogN and N^2
>
> --Colby
Right, so how do I set the filter taps for the PFB channelizer?  Is it
just a low-pass filter, or something
  else?


-- 
Principal Investigator
Shirleys Bay Radio Astronomy Consortium
http://www.sbrac.org