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[Discuss-gnuradio] Analysis_filterbank
From: |
Sebastiaan Heunis |
Subject: |
[Discuss-gnuradio] Analysis_filterbank |
Date: |
Tue, 13 Jan 2009 22:06:25 +0200 |
Eric
Sorry for the pointer to pointer question. I now understand how it
works. As for the polyphase filter.
# build mpoints fir filters...
for i in range(mpoints):
f = gr.fft_filter_ccc(1, sub_taps[mpoints-i-1])
self.connect((self.s2ss,i), f)
self.connect(f, (self.ss2v, i))
self.connect((self.v2ss, i), (self, i))
The existing wiring is correct from what I understand. The fact that
the sub filters get connected from last to first
(f=gr.fft_filter_ccc(1,sub_taps[mpoints-i-1])) does the same as
feeding the input samples in from bottom to top.
Looking at everything now, it seems to be fine. I just can't get it
to work correctly. I'll play around to try and see what I'm doing
wrong.
Thanks for all the help so far.
Sebastiaan
--
Sebastiaan Heunis
Radar and Remote Sensing Group, University of Cape Town
Tel: +27 83 305 5667