sphinx_pitch(1)

Extract pitch from audio files

Section 1 sphinxbase-utils bookworm source

Description

sphinx_pitch - Extract pitch from audio files

sphinx_pitch [ options ]...

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.

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