Praat 3.9, 18 October 2000

Editors:

•  Shift-click and shift-drag extend or shrink selection in editor windows.
•  Grouped editors can have separate zooming and scrolling (FunctionEditor preferences).
•  Cursor follows playing sound in editors; interruption by Escape key moves the cursor.
•  TextGridEditor: optimized for transcribing large corpora: text field, directly movable boundaries, more visible text in tiers, SpellingChecker, type while the sound is playing, complete keyboard navigation, control font size, control text alignment, shift-click near boundary adds interval to selection.
•  Stereo display in LongSound and TextGrid editors.
•  LongSoundEditor and TextGridEditor: write selection to audio file.
•  SoundEditor: added command Extract selection (preserve times).
•  IntervalTierEditor, DurationTierEditor.
•  Added many query commands in editors.

Phonetics library:

•  Sound: To Formant...: sample-rate-independent formant analysis.
•  Sound: To Harmonicity (glottal-to-noise excitation ratio).
•  Pitch: support for ERB units, draw all combinations of line/speckle and linear/logarithmic/semitones/mels/erbs, optionally with TextGrid, Subtract linear fit.
•  Spectrum: Draw along logarithmic frequency axis.
•  TextGrid: modification commands, Extract part, Shift to zero, Scale times (with Sound or LongSound).
•  Matrix: To TableOfReal, Draw contour...
•  Concatenate Sound and LongSound objects.
•  File formats: save PitchTier in spreadsheet format, read CGN syntax files (XML version), text files now completely file-server-safe (independent from Windows/Macintosh/Unix line separators).

Statistics and numerics library:

•  Principal component analysis.
•  Discriminant analysis.
•  Polynomial: drawing, root finding etc.
•  TableOfReal: Draw box plots....
•  Covariance: To TableOfReal (random sampling)....
•  SSCP: Get sigma ellipse area....
•  Query DTW for 'weighted distance' of time warp.
•  Distributions: To Strings (exact)...
•  Strings: Randomize.

Phonology library:

•  OTGrammar: To PairDistribution.

Graphics:

•  Full support for colour inkjet printers on Windows and Macintosh.
•  Full support for high-resolution colour clipboards and metafiles for Windows and Macintosh programs that support them (this include MS Word for Windows, but unfortunately not MS Word for Macintosh).
•  Colour in EPS files.
•  Interpolating grey images, i.e. better zoomed spectrograms.
•  Linux: support for 24-bits screens.

Audio:

•  Asynchronous sound play.
•  Linux: solved problems with /dev/mixer (“Cannot read MIC gain.”) on many computers.
•  Added possibility of zero padding for sound playing, in order to reduce clicks on some Linux and Sun computers.
•  LongSound supports mono and stereo, 8-bit and 16-bit, μ-law and A-law, big-endian and little-endian, AIFC, WAV, NeXT/Sun, and NIST files.
•  Read two Sounds from stereo file... supports 8-bit and 16-bit, μ-law and A-law, big-endian and little-endian, AIFC, WAV, NeXT/Sun, and NIST files.
•  SoundRecorder writes to 16-bit AIFC, WAV, NeXT/Sun, and NIST mono and stereo files.
•  Sound & LongSound: write part or whole to mono or stereo audio file.
•  Read Sound from raw Alaw file.
•  Artword & Speaker (& Sound) movie: real time on all platforms.

Scripting:

•  Formulas 5. Mathematical functions: added statistical functions: χ², Student T, Fisher F, binomial, and their inverse functions.
•  Windows: program praatcon for use as a Unix-style console application.
•  Windows and Unix: Praat can be run with a command-line interface without quitting on errors.
•  Unix & Windows: can use <stdout> as a file name (supports pipes for binary data).
•  sendpraat now also for Macintosh.
•  sendsocket.
•  Read from file... recognizes script files if they begin with “#!”.
•  Script links in ManPages.

Documentation

•  Tutorials on all subjects available through Intro.

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