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       dtmfcheck - Scan a wav file for DTMF tones


       dtmfcheck [ --block size ] file


       The  dtmfcheck  utility scans for valid DTMF in a test file.  It may be
       used to analyse recordings of audio where DTMF tones have either failed
       to be detected or have been improperly detected.

       In  the  latter case the --block option may be useful to zero in on the
       precise point in the file where the troublesome audio occurs.


       The following options are available:

       --block size
              Set the block size (in bytes) sent  to  the  DTMF  detector  for
              processing.  The default (and maximum) value is 32768 (2 seconds
              of audio), but smaller values may be  given  to  more  precisely
              locate where in a file a particular tone is detected.


       Ron Lee, Voicetronix <>

       This  manual  page  was written by Ron <>, for the Debian
       project (but may be used by others).