<html xmlns:v="urn:schemas-microsoft-com:vml" xmlns:o="urn:schemas-microsoft-com:office:office" xmlns:w="urn:schemas-microsoft-com:office:word" xmlns:m="http://schemas.microsoft.com/office/2004/12/omml" xmlns="http://www.w3.org/TR/REC-html40"><head><meta http-equiv=Content-Type content="text/html; charset=iso-8859-1"><meta name=Generator content="Microsoft Word 14 (filtered medium)"><style><!--
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</o:shapelayout></xml><![endif]--></head><body lang=PT link=blue vlink=purple><div class=WordSection1><p class=MsoNormal>Video of Codec2 presentation<o:p></o:p></p><p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US>David Rowe VK5DGR gave a presentation on the amateur radio digital voice Codec2 to the linux.conf.au 2012 in Ballarat, Jan 16-20, and was voted best paper of the conference.<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US>Codec2 is an open source low bit rate speech codec designed for communications quality speech at around 2400 bit/s. <o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US>Applications include low bandwidth HF/VHF digital radio and VOIP trunking. Codec 2 operating at 2000 bit/s can send 32 phone calls using the bandwidth required for one 64 kbit/s uncompressed phone call. It fills a gap in open source, free-as-in-speech voice codecs beneath 5000 bit/s and is released under the GNU Lesser General Public License (LGPL).<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US>Watch Codec 2 - Open Source Speech Coding at 2400 bit/s and Below - David Rowe<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US><a href="http://www.youtube.com/watch?v=KsywWf8dQgU">http://www.youtube.com/watch?v=KsywWf8dQgU</a> <o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US>Slides in Open office format are at<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US><a href="http://rowetel.com/downloads/lca_2012_codec2.odp">http://rowetel.com/downloads/lca_2012_codec2.odp</a><o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p><p class=MsoNormal>linux.conf.au 2012<o:p></o:p></p><p class=MsoNormal><a href="http://linux.conf.au/about/linux.conf.au">http://linux.conf.au/about/linux.conf.au</a><o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal><span lang=EN-US>Read the David Rowe VK5DGR blog at<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US><a href="http://www.rowetel.com/blog/?p=2255">http://www.rowetel.com/blog/?p=2255</a><o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US>Join the Codec2 email list at<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US><a href="https://lists.sourceforge.net/lists/listinfo/freetel-codec2">https://lists.sourceforge.net/lists/listinfo/freetel-codec2</a><o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US> <o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p></div></body></html>