From 0efc461c35b2173fd0142e7ae56c50a1b104d058 Mon Sep 17 00:00:00 2001
From: Clayton Smith <argilo@gmail.com>
Date: Sat, 27 Jul 2019 13:33:45 -0400
Subject: Add basic tests for FM preemphasis and deemphasis

---
 gr-analog/python/analog/qa_fm_emph.py | 65 +++++++++++++++++++++++++++++++++++
 1 file changed, 65 insertions(+)
 create mode 100644 gr-analog/python/analog/qa_fm_emph.py

(limited to 'gr-analog/python/analog/qa_fm_emph.py')

diff --git a/gr-analog/python/analog/qa_fm_emph.py b/gr-analog/python/analog/qa_fm_emph.py
new file mode 100644
index 0000000000..228e4db4ca
--- /dev/null
+++ b/gr-analog/python/analog/qa_fm_emph.py
@@ -0,0 +1,65 @@
+#!/usr/bin/env python
+#
+# Copyright 2019 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, gr_unittest, analog, blocks
+
+
+class test_fm_emph(gr_unittest.TestCase):
+
+    def setUp(self):
+        self.tb = gr.top_block()
+
+    def tearDown(self):
+        self.tb = None
+
+    def test_001(self):
+        # Confirm that we can instantiate and run an FM preemphasis block
+        tb = self.tb
+
+        src = analog.sig_source_f(48000, analog.GR_COS_WAVE, 5000.0, 1.0)
+        op = analog.fm_preemph(fs=48000, tau=75e-6, fh=-1.0)
+        head = blocks.head(gr.sizeof_float, 100)
+        dst = blocks.vector_sink_f()
+
+        tb.connect(src, op)
+        tb.connect(op, head)
+        tb.connect(head, dst)
+        tb.run()
+
+    def test_002(self):
+        # Confirm that we can instantiate and run an FM deemphasis block
+        tb = self.tb
+
+        src = analog.sig_source_f(48000, analog.GR_COS_WAVE, 5000.0, 1.0)
+        op = analog.fm_deemph(fs=48000, tau=75e-6)
+        head = blocks.head(gr.sizeof_float, 100)
+        dst = blocks.vector_sink_f()
+
+        tb.connect(src, op)
+        tb.connect(op, head)
+        tb.connect(head, dst)
+        tb.run()
+
+
+if __name__ == '__main__':
+    gr_unittest.run(test_fm_emph)
-- 
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