From 5d69a524f81f234b3fbc41d49ba18d6f6886baba Mon Sep 17 00:00:00 2001
From: jcorgan <jcorgan@221aa14e-8319-0410-a670-987f0aec2ac5>
Date: Thu, 3 Aug 2006 04:51:51 +0000
Subject: Houston, we have a trunk.
git-svn-id: http://gnuradio.org/svn/gnuradio/trunk@3122 221aa14e-8319-0410-a670-987f0aec2ac5
---
gnuradio-examples/python/audio/test_resampler.py | 66 ++++++++++++++++++++++++
1 file changed, 66 insertions(+)
create mode 100755 gnuradio-examples/python/audio/test_resampler.py
(limited to 'gnuradio-examples/python/audio/test_resampler.py')
diff --git a/gnuradio-examples/python/audio/test_resampler.py b/gnuradio-examples/python/audio/test_resampler.py
new file mode 100755
index 0000000000..6c9e5a7608
--- /dev/null
+++ b/gnuradio-examples/python/audio/test_resampler.py
@@ -0,0 +1,66 @@
+#!/usr/bin/env python
+#
+# Copyright 2004,2005 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., 59 Temple Place - Suite 330,
+# Boston, MA 02111-1307, USA.
+#
+
+from gnuradio import gr, gru, blks
+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("-i", "--input-rate", type="eng_float", default=8000,
+ help="set input sample rate to RATE (%default)")
+ parser.add_option("-o", "--output-rate", type="eng_float", default=48000,
+ help="set output sample rate to RATE (%default)")
+ (options, args) = parser.parse_args ()
+ if len(args) != 0:
+ parser.print_help()
+ raise SystemExit, 1
+
+ input_rate = int(options.input_rate)
+ output_rate = int(options.output_rate)
+
+ interp = gru.lcm(input_rate, output_rate) / input_rate
+ decim = gru.lcm(input_rate, output_rate) / output_rate
+
+ print "interp =", interp
+ print "decim =", decim
+
+ ampl = 0.1
+ src0 = gr.sig_source_f (input_rate, gr.GR_SIN_WAVE, 650, ampl)
+ rr = blks.rational_resampler_fff(self, interp, decim)
+ dst = audio.sink (output_rate, options.audio_output)
+ self.connect (src0, rr, (dst, 0))
+
+
+if __name__ == '__main__':
+ try:
+ my_graph().run()
+ except KeyboardInterrupt:
+ pass
--
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