[Ground-station] FreeDV QSO party, FreeDV GUI as a starting point for P4G?

[Bruce Perens]

Phil (and anyone else who wants to be aware of the bleeding edge in
codecs), be sure to read the Wavenet and LPCnet postings:
http://www.rowetel.com/?p=5966
http://www.rowetel.com/?p=6465
http://www.rowetel.com/?p=6482
http://www.rowetel.com/?p=6599

    Thanks

    Bruce

On Mon, Feb 25, 2019 at 1:52 PM Phil Karn via Ground-Station
<ground-station at lists.openresearch.institute> wrote:

> On 2/24/19 09:18, Michelle Thompson wrote:
>
> > Neither codec2 or opus sound great, even at high rates. I really like
> > the high rate aac used by WhatsApp. That's the minimum quality we should
> > be delivering.
>
> Opus has a minimum bit rate of 6 kb/s (though I think it may have
> recently been dropped to 5). It definitely outperforms AAC in subjective
> listening tests at the same bit rate, and best of all it is completely
> free.
>
> Because all these codecs (including Codec2) can operate at variable bit
> rates, I recommend supporting them. Stations with bigger transmitters
> and/or antennas should have the option to run at higher bit rates.
> Obviously there may be a least-common-denominator problem with receive
> stations, but I think the feature should be there.
>
> You need not support a super fine grained choice of bit rates, but there
> should at least be a choice.
>
> Phil
>
>
> _______________________________________________
> Ground-Station mailing list
> Ground-Station at lists.openresearch.institute
> http://lists.openresearch.institute/mailman/listinfo/ground-station
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.openresearch.institute/pipermail/ground-station-openresearch.institute/attachments/20190225/f1edfe18/attachment.html>