-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA512 Holger Wirtz wrote: > Hi, > > after thinking about this feature I recognized that there are some > problems: > > Real radio has a limited range. So you can use the same frequency at > every point on the world. If you can hear someone on the same frequency > depends on how much power his transmitter has (and some other physical > rules) and/or how far away he is and so on. But with the normal radio > in a plane (or on ground) you cannot reach the whole world. And radio > communication is a broadcast media. > > Now try to solve this with unicast media (such as VoIP). Without > information about the coords of each member you cannot decide "how far > away" you can be heared by other users. > > I have tried to fix this problem by using one well known coordinate (the > one of the tower) and the next one of the plane - and a limited range. > fgcom calculates which airport is most nearby your selected frequency. > With the coords of this airport it can calculate how far away fgcom is > and it can drop the line if it is out of range. > > The ideal algorithm would be some kind of conference server which gets > the frequency it is responsible for, the voice streams _and_ the coords > of all members on this frequency. With this data the stream for _each_ > member can be mixed up (far away = quite) and send it towards each > client. > > The problem is: that has not much to do with VoIP - so you havn't any > features of VoIP and no implementations for server and client. Feel free > to do so :-) > > Perhaps someone can extend the IAX2 protocol and write a new > app_meetme.so for Asterisk which ca realise this. But I think it is not > really neccessary at this time. I could not do it in C or C++ but I might be able in, lets say, C#. though currently I working on too many other open source things, both related to flightgear and other things, to have time.
Regards, Arvid Norlander -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.7 (GNU/Linux) iD8DBQFHam5UWmK6ng/aMNkRCveyAJ9bVJkhOgJKBmUCVnOrr2C2CPWicACfQljg P757L0tDt+Wi3JUgtkx5kYE= =vp1/ -----END PGP SIGNATURE----- ------------------------------------------------------------------------- SF.Net email is sponsored by: Check out the new SourceForge.net Marketplace. It's the best place to buy or sell services for just about anything Open Source. http://ad.doubleclick.net/clk;164216239;13503038;w?http://sf.net/marketplace _______________________________________________ Flightgear-devel mailing list Flightgear-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/flightgear-devel
