Praat 4.0, 15 October 2001

Editors:

•  Simplified selection and cursor in editor windows.
•  Spectrogram, pitch contour, formant contour, and intensity available in the Sound, LongSound, and TextGrid editors.
•  TextGrid editor: additions and improvements.
•  Log files.

Phonetics library:

•  ExperimentMFC: multiple-forced-choice listening experiments.
•  Sound: To Pitch (ac)...: pitch contour less dependent on time resolution. This improves the constancy of the contours in the editors when zooming.
•  TextGrid: additions and improvements.
•  Sounds: Concatenate recoverably. Creates a TextGrid whose interval labels are the original names of the sounds.
•  Sound & TextGrid: Extract all intervals. The reverse of the previous command.
•  Filterbank analyses, MelFilter, BarkFilter and FormantFilter, by band filtering in the frequency domain.
•  Cepstrum by David Weenink: MFCC, LFCC. Cepstrum object is a representation of the complex cepstrum.
•  Intensity: To IntensityTier (peaks, valleys).
•  Replaced Analysis and AnalysisEditor with Manipulation and ManipulationEditor.

Phonology library:

•  PairDistribution: Get percentage correct (maximum likelihood, probability matching).
•  OTGrammar & PairDistribution: Get percentage correct...

Graphics:

•  Improved spectrogram drawing.
•  Special symbols: háček.
•  Macintosh: improved screen rendition of rotated text.

Audio:

•  Macintosh: support for multiple audio input devices (sound cards).

Statistics and numerics library:

•  More statistics by David Weenink.
•  Improved random numbers and other numerical stuff.
•  Regular expressions.

Scripting:

•  Formatting in variable substitution, e.g. 'pitch:2' gives two digits after the decimal point.
•  Added fixed$ to scripting language for formatting of numbers.

Documentation:

•  Multidimensional scaling tutorial.
•  Enabled debugging-at-a-distance.

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