1 files changed, 28 insertions, 0 deletions
diff --git a/docs/exploring-gnuradio/dial_tone_example.xml b/docs/exploring-gnuradio/dial_tone_example.xml
new file mode 100644
index 000000000..14ea68039
--- /dev/null
+++ b/docs/exploring-gnuradio/dial_tone_example.xml
@@ -0,0 +1,28 @@
+<?xml version="1.0" encoding="ISO-8859-1"?>
+<example id="dial_tone_ex"><title>Dial Tone Output</title>
+<programlisting>
+#!/usr/bin/env python
+
+from gnuradio import gr
+from gnuradio import audio
+
+def build_graph ():
+    sampling_freq = 48000
+    ampl = 0.1
+
+    fg = gr.flow_graph ()
+    src0 = gr.sig_source_f (sampling_freq, gr.GR_SIN_WAVE, 350, ampl)
+    src1 = gr.sig_source_f (sampling_freq, gr.GR_SIN_WAVE, 440, ampl)
+    dst = audio.sink (sampling_freq)
+    fg.connect ((src0, 0), (dst, 0))
+    fg.connect ((src1, 0), (dst, 1))
+
+    return fg
+
+if __name__ == '__main__':
+    fg = build_graph ()
+    fg.start ()
+    raw_input ('Press Enter to quit: ')
+    fg.stop ()
+</programlisting>
+</example>