The fixed-point version AMR-NB: http://www.3gpp.org/ftp/Specs/archive/26_series/26.104/26104-610.zip The fixed-point version AMR-WB: http://www.3gpp.org/ftp/Specs/archive/26_series/26.204/26204-600.zip extract c-code directory in source archvies as 26104 and 26204 subdirectories and run patch with 26104.diff and 26204.diff defines: inline=__inline (MSVC)