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g711conv (1)
  • >> g711conv (1) ( FreeBSD man: Команды и прикладные программы пользовательского уровня )

  • BSD mandoc
     

    NAME

    
    
    g711conv
    
     - conversions according to G.711
    
     
    

    SYNOPSIS

    [-a ] [-u ] [-P ] [-A ] [-R ]  

    DESCRIPTION

    The utility is part of the isdn4bsd package and is used to convert between the A-Law and u-law formats as specified in ITU G.711. It is based on a freely available and freely usable reference implementation done by Sun Microsystems, Inc.

    The following options are available:

    -a
    Convert A-law to u-law
    -u
    Convert u-law to A-law
    -r
    Reverse bits before conversion
    -R
    Reverse bits after conversion
    -P
    Print the resulting conversion tables (as C-source) to stdout instead of doing the actual conversion.

     

    EXAMPLES

    The command:
    g711conv -P -a
    

    prints out the A-law to u-law conversion table as C-source to stdout.

    The command:

    cat max_headroom.ul | g711conv -u -R > /dev/i4btel0
    

    converts the u-law coded voice of Max Headroom to A-law, reverses the bits of the result and moves that to an active isdn4bsd telephone connection.  

    STANDARDS

    A-Law and u-Law conversions are specified in ITU Recommendation G.711.

    The reference implementation done by Sun Microsystems, Inc. is available from http://www.itu.int/itudoc/itu-t/rec/g/g700-799/refimpl.txt  

    AUTHORS

    The utility and this manpage were written by An Hellmuth Michaelis Aq [email protected] based on the G.711 conversion reference code written by Sun Microsystems, Inc. and code contributed to isdn4bsd by Stefan Bethke.


     

    Index

    NAME
    SYNOPSIS
    DESCRIPTION
    EXAMPLES
    STANDARDS
    AUTHORS


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