--- a/audio.rst	Thu Dec 29 02:10:37 2016 +0200
+++ b/audio.rst	Thu Dec 29 02:12:49 2016 +0200
@@ -46,8 +46,11 @@
 ======================
 ::
 
+  $ arecord out.wav
   $ arecord -f cd -t raw | oggenc -r -o out.ogg -
   $ arecord -f cd -t raw | lame -r - out.mp3
+  $ sox -t alsa default out.wav
+  $ audacity &
 
 Check HDA params.
 =================