Cecil Moore wrote:

...
I hear digital voice used on HF amateur radio has the
same problem.

Amateur digital communications have one real and serious problem, they
have not adopted Ogg Vorbis as their standard digital
encryption/coding/decoding/error-checking "mode"--indeed, an actual
"superset" of Ogg Vorbis is needed for radio duplex communications ...
amateurs, in general, need be the "final designers"--that won't happen
until larger numbers are involved.

Ogg Vorbis is open source, free to use/implement in your own software,
it just doesn't get the blessing of the arrl and it can't be used as an
excuse to inflate prices ... :-(

Until that is established as a standard, Ogg Vorbis, (or, a "mode"
invented/designed/implemented with the same
redundancy/efficiency/fool-proof-ness), these problems will be of a
notable nature ... :-( How and when to request re-sending of error
packets, how many times these requests can be allowed, how long to hold
a packet in the buffers, how large of buffers to be used, size of the
packets allowed, etc., etc., etc will all need to be agreed upon in that
standard--so far NONE I HAVE SEEN ARE ADEQUATE--indeed, only one is on
the right track at all ... and, the standard can be designed to be
highly adaptable/upgradeable--with only firmware upgrades needed to
bring old hardware completely up-to-date (manufacturers will surely
attempt to get in control of this and be able to force the purchase of
new equip/planned-obsolescence by the denial of new "flash firmwares" or
designing new firmware upgrades in such a manner as make existing equip
unable to accept them, example, just make it too large for the present
memory(s) size(s) and disallow memory upgrades--you know, the "standard
stuff" already being done. grin)

While you and a buddy can use it between yourselves, or, you can attempt
to get your club interested ... it remains on the fringes ... I find
"digital hams" on the HF bands to be as rare as "chickens teeth", at
least ones working with decent digital transmission
software/algorithms/etc. ... :-(

There was a group of hams which broke away from all this are were going
to release open source code which would have to be accepted just because
of its' sheer efficiency and performance ... internal bickering and
outside pressures had/has brought its' progress to a crawl/halt at the
present time ... such "tinker-ings" gets the attention of high powers in
high places ... :-(

(or, is this all just my paranoia--I will allow you and the future to
decide ...) digital radio is coming ... it is just walking with a cane!
LOL

Regards,
JS