added readme

git-svn-id: http://svn.berlios.de/svnroot/repos/sems/trunk@134 8eb893ce-cfd4-0310-b710-fb5ebe64c474

doc/Readme.iLBC

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+
+iLBC codec README
+
+About iLBC (from ilbcfreeware.org)
+----------------------------------
+iLBC (internet Low Bitrate Codec) is a FREE speech codec 
+suitable for robust voice communication over IP. The codec 
+is designed for narrow band speech and results in a payload 
+bit rate of 13.33 kbit/s with an encoding frame length of 
+30 ms and 15.20 kbps with an encoding length of 20 ms. The 
+iLBC codec enables graceful speech quality degradation in 
+the case of lost frames, which occurs in connection with 
+lost or delayed IP packets.
+
+The implementation
+------------------
+The iLBC implementation is the ANSI C floating point 
+implementation provided with RFC3951.
+
+License
+-------
+The iLBC codec implementation use is subject to the GIPS 
+Royalty Free License which can be obtained from
+http://ilbcfreeware.org/documentation/gips_iLBClicense.pdf