[aprssig] APRS Text to speech
bruninga at usna.edu
Thu Mar 8 19:59:35 CST 2007
The ANDE and RAFT satellites add APRS Packet-to-VOICE synthesis
by simply connecting a speech module to the serial port of the
TNC and making one addition to convert the HEADER of a packet
into "CALLSIGN SAYS..." and then speaks the rest of the packet.
We all know how hard it is to set up a VOICE repeater out in the
field, compared to how easy it is to set up a DIGIpeater. AND a
DIGI can go multiple hops.
Imagine plopping down 2 coffee-can digi's on hilltops and then
being able to use APRS to send VOICE to an RF area 3 links away.
Yes, the applications are small, but it is a nice thing to have
in your tool kit. Well, the reason we have not pushed this is
that the module we were using cost $199 and hams just wont pay
that much. But I just found out that PARALLAX sells a complete
module for only $59.
This is much more like it.
Remember, that since 1995, APRS has defined a test-to-speech
protocol. If any string in any APRS packet begins with a %,
then the client (if it has a voice) is supposed to speak that
part of the packet.
The D700's will SPEAK such packets, (but it has a very very
limited vocabulary, and few people have the speech module. But
APRSdos had no voice, but would sound out the words in CW.
WinAPRS would speak it. I assume that other clints will also
But with the addition of a $59 moudle to any TNC, you can now
have voice in a remote box without having to have a client.
Anyway, we need to think about how we do this. A pic could do
to old TNC's what the KPC-3+ in ANDE and RAFT do. That is,
convert the header to speech. Etc...
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