From faab807cf5e8b4a4c950d1fd8ae6672296fb1ad9 Mon Sep 17 00:00:00 2001
From: Tom Rondeau <trondeau@vt.edu>
Date: Tue, 3 Apr 2012 18:21:52 -0400
Subject: Rework example directories. Gets rid of gnuradio-examples, moves
these to more appropriate components.
gnuradio-core and grc now have their own examples directories for files directly related to them.
---
gnuradio-examples/python/pfb/synth_to_chan.py | 117 --------------------------
1 file changed, 117 deletions(-)
delete mode 100755 gnuradio-examples/python/pfb/synth_to_chan.py
(limited to 'gnuradio-examples/python/pfb/synth_to_chan.py')
diff --git a/gnuradio-examples/python/pfb/synth_to_chan.py b/gnuradio-examples/python/pfb/synth_to_chan.py
deleted file mode 100755
index c6c80b2f85..0000000000
--- a/gnuradio-examples/python/pfb/synth_to_chan.py
+++ /dev/null
@@ -1,117 +0,0 @@
-#!/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 sys
-
-try:
- import scipy
-except ImportError:
- print "Error: Program requires scipy (see: www.scipy.org)."
- sys.exit(1)
-
-try:
- import pylab
-except ImportError:
- print "Error: Program requires matplotlib (see: matplotlib.sourceforge.net)."
- sys.exit(1)
-
-def main():
- N = 1000000
- fs = 8000
-
- freqs = [100, 200, 300, 400, 500]
- nchans = 7
-
- sigs = list()
- fmtx = list()
- for fi in freqs:
- s = gr.sig_source_f(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)
-
- syntaps = gr.firdes.low_pass_2(len(freqs), fs, fs/float(nchans)/2, 100, 100)
- print "Synthesis Num. Taps = %d (taps per filter = %d)" % (len(syntaps),
- len(syntaps)/nchans)
- chtaps = gr.firdes.low_pass_2(len(freqs), fs, fs/float(nchans)/2, 100, 100)
- print "Channelizer Num. Taps = %d (taps per filter = %d)" % (len(chtaps),
- len(chtaps)/nchans)
- filtbank = gr.pfb_synthesizer_ccf(nchans, syntaps)
- channelizer = blks2.pfb_channelizer_ccf(nchans, chtaps)
-
- noise_level = 0.01
- head = gr.head(gr.sizeof_gr_complex, N)
- noise = gr.noise_source_c(gr.GR_GAUSSIAN, noise_level)
- addnoise = gr.add_cc()
- snk_synth = gr.vector_sink_c()
-
- tb = gr.top_block()
-
- tb.connect(noise, (addnoise,0))
- tb.connect(filtbank, head, (addnoise, 1))
- tb.connect(addnoise, channelizer)
- tb.connect(addnoise, snk_synth)
-
- snk = list()
- for i,si in enumerate(sigs):
- tb.connect(si, fmtx[i], (filtbank, i))
-
- for i in xrange(nchans):
- snk.append(gr.vector_sink_c())
- tb.connect((channelizer, i), snk[i])
-
- tb.run()
-
- if 1:
- channel = 1
- data = snk[channel].data()[1000:]
-
- f1 = pylab.figure(1)
- s1 = f1.add_subplot(1,1,1)
- s1.plot(data[10000:10200] )
- s1.set_title(("Output Signal from Channel %d" % channel))
-
- fftlen = 2048
- winfunc = scipy.blackman
- #winfunc = scipy.hamming
-
- f2 = pylab.figure(2)
- s2 = f2.add_subplot(1,1,1)
- s2.psd(data, NFFT=fftlen,
- Fs = nchans*fs,
- noverlap=fftlen/4,
- window = lambda d: d*winfunc(fftlen))
- s2.set_title(("Output PSD from Channel %d" % channel))
-
- f3 = pylab.figure(3)
- s3 = f3.add_subplot(1,1,1)
- s3.psd(snk_synth.data()[1000:], NFFT=fftlen,
- Fs = nchans*fs,
- noverlap=fftlen/4,
- window = lambda d: d*winfunc(fftlen))
- s3.set_title("Output of Synthesis Filter")
-
- pylab.show()
-
-if __name__ == "__main__":
- main()
--
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