Anyone had a chance to spin up a Windows version yet? Walter/K5WH
-----Original Message----- From: David Rowe [mailto:[email protected]] Sent: Monday, January 16, 2017 1:06 AM To: [email protected] Subject: [Freetel-codec2] FreeDV 700C and 800XA Hello, Over the weekend I have integrated the 700C Codec 2 with the FreeDV API and FreeDV GUI programs. The 700C FreeDV mode uses the 700C codec and the 700 bit/s coherent PSK modem developed a few years ago. It works OK for me between radios on the bench. With Brady's help, the 800XA mode has also been added. This also uses the 700C codec but is teamed with the 4FSK modem we have developed for VHF/UHF work. The extra 100 bit/s is for frame synchronization. This is a bit experimental for HF work, but has the advantage of being a constant power waveform. I tested it today and managed to smoke up the balun in my end fed antenna (which is rated for SSB I guess not CW)! On my bench tests 800XA still has issues with losing sync with non-flat SSB filters, Brady and I will work on that over the next few weeks. The same modem is working really well with 100 kbit/s UHF SSTV: http://www.rowetel.com/?p=5344 The FreeDV code is all checked in, so some of you might like to build and try it it. We will look at getting some Windows versions built shortly. It's early days for 700C and 800XA. My first goal is to see if FreeDV 700C works at least as well as FreeDV 1600 in terms of speech quality and robustness. Next steps will include making 700C more robust to HF channel issues, and another lap around the codec development to see if we can improve speech quality. Once we are happy that it's an improvement on FreeDV 1600 we'll see about a SM1000 port. Thanks, David ---------------------------------------------------------------------------- -- Developer Access Program for Intel Xeon Phi Processors Access to Intel Xeon Phi processor-based developer platforms. With one year of Intel Parallel Studio XE. Training and support from Colfax. Order your platform today. http://sdm.link/xeonphi _______________________________________________ Freetel-codec2 mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/freetel-codec2 ------------------------------------------------------------------------------ Check out the vibrant tech community on one of the world's most engaging tech sites, SlashDot.org! http://sdm.link/slashdot _______________________________________________ Freetel-codec2 mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/freetel-codec2
