These are ITU-T speech codecs,include G.711 G.721 G.723,and G.723 also supports 16kbit/s 24kbit/s 40kbit/s. g72x.h and g711.h are common head files.

Packet : 69491758itu-t speech code.rar filelist
ITU-T speech code\g72x.h
ITU-T speech code\g711.c
ITU-T speech code\g711.h
ITU-T speech code\g721.c
ITU-T speech code\g723_16.c
ITU-T speech code\g723_24.c
ITU-T speech code\g723_40.c
ITU-T speech code\g72x.c
ITU-T speech code

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