Work on examples for the synthesize filterbank block. The cleans up the simple exampl...

[debian/gnuradio] / gnuradio-examples / python / pfb / synth_filter.py

diff --git a/gnuradio-examples/python/pfb/synth_filter.py b/gnuradio-examples/python/pfb/synth_filter.py
index 015ebd66845119575b94facc6680249fac8e391a..a1562f9eacb05103f5aad1ba706e78c9e591aa6f 100755 (executable)
--- a/gnuradio-examples/python/pfb/synth_filter.py
+++ b/gnuradio-examples/python/pfb/synth_filter.py
@@ -1,4 +1,24 @@
 #!/usr/bin/env python
+#
+# Copyright 2010 Free Software Foundation, Inc.
+# 
+# This file is part of GNU Radio
+# 
+# GNU Radio is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 3, or (at your option)
+# any later version.
+# 
+# GNU Radio is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+# 
+# You should have received a copy of the GNU General Public License
+# along with GNU Radio; see the file COPYING.  If not, write to
+# the Free Software Foundation, Inc., 51 Franklin Street,
+# Boston, MA 02110-1301, USA.
+# 
 
 from gnuradio import gr, blks2
 import scipy, pylab
@@ -11,17 +31,13 @@ def main():
     nchans = 7
 
     sigs = list()
-    fmtx = list()
     for fi in freqs:
         s = gr.sig_source_c(fs, gr.GR_SIN_WAVE, fi, 1)
-        fm = blks2.nbfm_tx (fs, 4*fs, max_dev=10000, tau=75e-6)
         sigs.append(s)
-        fmtx.append(fm)
 
     taps = gr.firdes.low_pass_2(len(freqs), fs, fs/float(nchans)/2, 100, 100)
     print "Num. Taps = %d (taps per filter = %d)" % (len(taps), 
                                                      len(taps)/nchans)
-    #filtbank = blks2.synthesis_filterbank(nchans, taps)
     filtbank = gr.pfb_synthesis_filterbank_ccf(nchans, taps)
 
     head = gr.head(gr.sizeof_gr_complex, N)
@@ -31,12 +47,11 @@ def main():
     tb.connect(filtbank, head, snk)
 
     for i,si in enumerate(sigs):
-        #tb.connect(si, fmtx[i], (filtbank, i))
         tb.connect(si, (filtbank, i))
     
     tb.run()
 
-    if 0:
+    if 1:
         f1 = pylab.figure(1)
         s1 = f1.add_subplot(1,1,1)
         s1.plot(snk.data()[1000:])
@@ -45,7 +60,6 @@ def main():
         f2 = pylab.figure(2)
         s2 = f2.add_subplot(1,1,1)
         winfunc = scipy.blackman
-        #winfunc = scipy.hamming
         s2.psd(snk.data()[10000:], NFFT=fftlen,
                Fs = nchans*fs,
                noverlap=fftlen/4,