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[Commit-gnuradio] r4615 - gnuradio/trunk/gnuradio-examples/python/audio
From: |
jcorgan |
Subject: |
[Commit-gnuradio] r4615 - gnuradio/trunk/gnuradio-examples/python/audio |
Date: |
Fri, 23 Feb 2007 12:10:23 -0700 (MST) |
Author: jcorgan
Date: 2007-02-23 12:10:22 -0700 (Fri, 23 Feb 2007)
New Revision: 4615
Added:
gnuradio/trunk/gnuradio-examples/python/audio/noise.py
Modified:
gnuradio/trunk/gnuradio-examples/python/audio/Makefile.am
Log:
Added noise example using LFSR.
Modified: gnuradio/trunk/gnuradio-examples/python/audio/Makefile.am
===================================================================
--- gnuradio/trunk/gnuradio-examples/python/audio/Makefile.am 2007-02-23
18:54:26 UTC (rev 4614)
+++ gnuradio/trunk/gnuradio-examples/python/audio/Makefile.am 2007-02-23
19:10:22 UTC (rev 4615)
@@ -29,5 +29,6 @@
dialtone_v.py \
mono_tone.py \
multi_tone.py \
+ noise.py \
spectrum_inversion.py \
test_resampler.py
Added: gnuradio/trunk/gnuradio-examples/python/audio/noise.py
===================================================================
--- gnuradio/trunk/gnuradio-examples/python/audio/noise.py
(rev 0)
+++ gnuradio/trunk/gnuradio-examples/python/audio/noise.py 2007-02-23
19:10:22 UTC (rev 4615)
@@ -0,0 +1,55 @@
+#!/usr/bin/env python
+#
+# Copyright 2007 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 2, 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
+from gnuradio import audio
+from gnuradio.eng_option import eng_option
+from optparse import OptionParser
+
+class my_graph(gr.flow_graph):
+
+ def __init__(self):
+ gr.flow_graph.__init__(self)
+
+ parser = OptionParser(option_class=eng_option)
+ parser.add_option("-O", "--audio-output", type="string", default="",
+ help="pcm output device name. E.g., hw:0,0 or
/dev/dsp")
+ parser.add_option("-r", "--sample-rate", type="eng_float",
default=48000,
+ help="set sample rate to RATE (48000)")
+ (options, args) = parser.parse_args ()
+ if len(args) != 0:
+ parser.print_help()
+ raise SystemExit, 1
+
+ sample_rate = int(options.sample_rate)
+ ampl = 0.1
+
+ src = gr.glfsr_source_b(32) # Pseudorandom noise source
+ b2f = gr.chunks_to_symbols_bf([ampl, -ampl], 1)
+ dst = audio.sink(sample_rate, options.audio_output)
+ self.connect(src, b2f, dst)
+
+if __name__ == '__main__':
+ try:
+ my_graph().run()
+ except KeyboardInterrupt:
+ pass
Property changes on: gnuradio/trunk/gnuradio-examples/python/audio/noise.py
___________________________________________________________________
Name: svn:executable
+ *
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