[aprssig] VOICE Over APRS??
kc6ete@gmail.com kc6ete at gmail.comTue Sep 21 17:23:03 UTC 2010
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Would not be hard to use a speakjet for this.. Sent from my HTC on the Now Network from Sprint! ----- Reply message ----- From: "Stephen H. Smith" <wa8lmf2 at aol.com> Date: Tue, Sep 21, 2010 10:36 am Subject: [aprssig] VOICE Over APRS?? To: "TAPR APRS Mailing List" <aprssig at tapr.org> I'm only HALF joking..... From today's Slashdot.org: <http://news.slashdot.org/story/10/09/21/0428259/Codec2-mdash-an-Open-Source-Low-Bandwidth-Voice-Codec> Bruce Perens <http://bruceperenscom/> writes /"Codec2 is an Open Source digital voice codec for low-bandwidth applications <http://www.rowetel.com/blog/?page_id=452>, in its first Alpha release. Currently it can encode 3.75 seconds of clear speech in 1050 bytes, and there are opportunities to code in additional compression that will further reduce its bandwidth. The main developer is David Rowe <http://www.rowetel.com/>, who also worked on Speex <http://www.speex.org/index.shtml.en>. Originally designed for Amateur Radio, both via sound-card software modems on HF radio and as an alternative to the proprietary voice codec presently used in D-STAR <http://en.wikipedia.org/wiki/D-STAR>, the codec is probably also useful for telephony at a fraction of current bandwidths. The algorithm is based on papers from the 1980s, and is intended to be unencumbered by valid unexpired patent claims. The license is LGPL2. The project is seeking developers for testing in applications, algorithmic improvement, conversion to fixed-point, and coding to be more suitable for embedded systems." /Full story at the link above. Apparently, it will be demoed at the upcoming TAPR DCC . ------------------------------------------------------------------------------- -- Stephen H. Smith wa8lmf (at) aol.com EchoLink Node: WA8LMF or 14400 [Think bottom of the 2M band] Skype: WA8LMF Home Page: http://wa8lmf.net ===== Vista & Win7 Install Issues for UI-View and Precision Mapping ===== http://wa8lmf.net/aprs/UIview_Notes.htm#VistaWin7 *** HF APRS over PSK63 *** http://wa8lmf.net/APRS_PSK63/index.htm "APRS 101" Explanation of APRS Path Selection & Digipeating http://wa8lmf.net/DigiPaths _______________________________________________ aprssig mailing list aprssig at tapr.org https://www.tapr.org/cgi-bin/mailman/listinfo/aprssig -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://www.tapr.org/pipermail/aprssig/attachments/20100921/ccb399e0/attachment.htm>
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