acfana
  Analysis of the short-term autocorrelation function of the signal in . Analysis results will be written to a file with the base name of the input file and extension '.acf'. Default output is in double precision floating point binary in SSFF format (keyword 'acf').
afconvert
  Converts format and/or data of the audio file(s) . Output will be written to a file with the base name of the input file and the extension corresponding to the output format (see -F option) c.q. the one defined with the -x option. If neither of these options is used, the output format defaults on this system to WAV. If only the extension has been defined the program will try to guess the desired output format on that basis. When splitting multi-channel files, the construction of the names of the output files is as follows: When no extension has been defined, '.ch1', '.ch2', etc. will be used. If an extension has been defined, the channel code ('_l' c.q. '_r' for stereo files and '_1', '_2', etc. for multi-channel files) will be appended to the base name of the output files. Alternatively, you may specify a series of different extensions to be used (see -x option). Apart from the output formats listed below, the program can handle files in CSL, CSRE, KTH/SWELL and SSFF format. The -R options can be used to convert headerless files or those with a faulty header or in an unsupported format.
f0ana
  F0 analysis of the signal in using the Schaefer-Vincent periodicity detector (Phonetica 40, 1983). Analysis results will be written to a file with the base name of the input file and extension '.f0'. Default output is in single precision floating point binary in SSFF format (keyword 'F0'). Optionally, location and type of the signal extrema on which the F0 data are based, may be stored in a label file. The name of this file will consist of the base name of the F0 file and the extension '.prd'.
ffinfo
  ffinfo tries to determine the format of . If it can identify the file header, it will print its contents in the format: to the screen.
forest
  Formant estimation of the signal(s) in . Raw resonance frequency and bandwidth values are obtained by root-solving of the Linear Prediction polynomial from the autocorrelation method and the Split-Levinson algorithm (SLA). Resonances are then classified as formants using the so-called Pisarenko frequencies (by-product of the SLA) and a formant frequeny range table derived from the nominal F1 frequency. The latter may have to be increased by about 10% for female voices (see -F1 option). Formant estimates will be written to a file with the base name of the input file and extension '.fms'. Default output is in double precision floating point binary in SSFF format (keywords 'rms', 'gain', 'fm' and 'bw')
rfcana
  Linear Prediction analysis of (s) using the autocorrelation method and the Durbin recursion. This program calculates the RMS values of the input and residual signal in dB and, per default, reflection coefficients (see '-t' option). Analysis results will be written to a file with the base name of the input file and the parameter type in lower case as extension (e.g. '.rfc'). Default output is in double precision floating point binary in SSFF format (keywords 'rms', 'gain' and the parameter type in lower case).
rmsana
  Analysis of short-term Root Mean Square amplitude of the signal in . Per default, the RMS values are expressed in decibel (dB) so that they correspond to the short-term energy of the signal. Analysis results will be written to a file with the base name of the input file and extension '.rms'. Default output is in single precision floating point binary in SSFF format (keyword 'rms').
spectrum
  Short-term spectral analysis of the signal in using the Fast Fourier Transform. The default is to calculate an unsmoothed narrow-band spectrum with the size of the analysis window equal to the length of the FFT. The output from the FFT will be converted to a power spectrum in dB from 0 Hz to half the sampling rate (Nyquist frequency). Alternatively, the program can calculate a smoothed spectrum or cepstral coefficients. In the latter case the number of coefficients per output record will also equal the FFT length / 2 + 1. Analysis results will be written to a file with the base name of the input file and the spectrum type in lower case as extension (e.g. '.dft'). Default output is in single precision floating point binary in SSFF format with the spectrum type in lower case as keyword.
zcrana
  Analysis of the averages of the short-term positive and negative zero-crossing rates of the signal in . Analysis results will be written to a file with the base name of the input file and extension '.zcr'. Default output is in single precision floating point binary in SSFF format (keyword 'zcr').