NAME

       sphinx_pitch - Extract pitch from audio files

SYNOPSIS

       sphinx_pitch [ options ]...

DESCRIPTION

       This program reads audio files and analyzes them for pitch and voicing.

       -c     file for batch processing

       -di    directory, input file names are relative to this, if defined

       -do    directory, output files are relative to this

       -ei    extension to be applied to all input files

       -eo    extension to be applied to all output files

       -flen  Number  of  seconds  in  each  analysis  frame  (needs to be greater than twice the
              longest period you wish to detect - to detect down to 80Hz you need a frame  length
              of 2.0/80 = 0.025).

       -fshift
              Frame shift: number of seconds between each analysis frame.

       -i     audio input file

       -input_endian
              of audio data (will be determined automatically if not given)

       -mswav Defines input format as Microsoft Wav (RIFF)

       -nist  Defines input format as NIST sphere

       -nskip If  a  control  file was specified, the number of utterances to skip at the head of
              the file

       -o     text output file (standard output will be used if not given)

       -raw   Defines input format as raw binary data

       -runlen
              If a control file was specified, the number of utterances to  process  (see  -nskip
              too)

       -samprate
              Sampling rate of audio data (will be determined automatically if 0)

       -search_range
              Fraction of the best local estimate to use as a search range for smoothing.

       -smooth_window
              Number of frames on either side of the current frame to use for smoothing.

       -voice_thresh
              Threshold  of  normalized  difference  under  which  to  search for the fundamental
              period.

AUTHOR

       David Huggins-Daines <dhuggins@cs.cmu.edu>

COPYRIGHT

       Copyright © 2007-2008 Carnegie Mellon University.  See the file COPYING included with this
       package for more information.

                                            2007-05-12                            SPHINX_PITCH(1)