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<H1><IMG alt="Free Telephony Project founder David Rowe"
src="http://cdn.idg.com.au/gim/id/11305/res/18">
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<P class=storybody><FONT size=3>Free Telephony Project founder David Rowe,
VK5DGR</FONT></P></DIV></H1>
<H1>Interview with Codec developer VK5DGR</H1>
<P><FONT face=Tahoma>One of the limitings factors in Amateur Radio
experimen-tation with Digital Voice has been the lack of suitable Open Source
Codecs. </FONT></P>
<P><FONT face=Tahoma><STRONG>David Rowe VK5DGR</STRONG> hopes to change
that.</FONT></P>
<P><FONT face=Tahoma>A Codec converts audio into a digital data stream and at
the receiving end converts that data back to audio.</FONT></P>
<P><FONT face=Tahoma>Amateur Radio is in need of two Codecs. One for high
quality voice on VHF/UHF maybe using 5 kHz channels, the other a lower data rate
version for HF that could be carried in a bandwidth of less than 1.5
kHz.</FONT></P>
<P><FONT face=Tahoma>Recent experiments by Radio Amateurs with digital voice on
HF have been very successful but they relied on the use of a proprietary
software Codec and were at variance with copyright restrictions. For HF digital
voice to progress an Open Source Codec is needed.</FONT></P>
<P><FONT face=Tahoma>Read the Open Source Identity interview with Free Telephony
Project founder David Rowe VK5DGR at<BR></FONT><A
href="http://www.cio.com.au/article/264806/open_source_identity_free_telephony_project_founder_david_rowe/"
target=_blank><FONT
face=Tahoma>http://www.cio.com.au/article/264806/open_source_identity_free_telephony_project_founder_david_rowe/</FONT></A></P>
<P><FONT face=Tahoma>David Rowe VK5DGR Codec2 Blog<BR></FONT><A
href="http://www.rowetel.com/blog/?p=128" target=_blank><FONT
face=Tahoma>http://www.rowetel.com/blog/?p=128</FONT></A></P>
<P><FONT face=Tahoma>The Codec2 Project<BR></FONT><A href="http://codec2.org/"
target=_blank><FONT face=Tahoma>http://codec2.org/</FONT></A></P>
<P><FONT face=Tahoma>Open source DSTAR voice - Codec2<BR></FONT><A
href="http://www.southgatearc.org/news/june2010/dstar_codec2.htm"
target=_blank><FONT
face=Tahoma>http://www.southgatearc.org/news/june2010/dstar_codec2.htm</FONT></A><BR></P></BODY></HTML>