sphinx_pitch man page
sphinx_pitch — Extract pitch from audio files
sphinx_pitch [ options ]...
This program reads audio files and analyzes them for pitch and voicing.
file for batch processing
directory, input file names are relative to this, if defined
directory, output files are relative to this
extension to be applied to all input files
extension to be applied to all output files
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).
Frame shift: number of seconds between each analysis frame.
audio input file
of audio data (will be determined automatically if not given)
Defines input format as Microsoft Wav (RIFF)
Defines input format as NIST sphere
If a control file was specified, the number of utterances to skip at the head of the file
text output file (standard output will be used if not given)
Defines input format as raw binary data
If a control file was specified, the number of utterances to process (see -nskip too)
Sampling rate of audio data (will be determined automatically if 0)
Fraction of the best local estimate to use as a search range for smoothing.
Number of frames on either side of the current frame to use for smoothing.
Threshold of normalized difference under which to search for the fundamental period.
David Huggins-Daines <firstname.lastname@example.org>
Copyright © 2007-2008 Carnegie Mellon University. See the file COPYING included with this package for more information.