version 6.4.13, June 10, 2024

• More manual pages.
• Sounds: Concatenate with overlap...: guard against a crash that would occur if the total overlap time was longer than the original sounds together.
• number recognizes hexadecimal numbers again (bug since February 2023).

version 6.4.12, May 2, 2024

• Align interval: fewer error messages.

version 6.4.11, April 26, 2024

• Menu commands that call a script (e.g. those that were added from a plug-in) are now visible as such by being marked with a little “+” sign.
• Fixed a bug that could cause the SpeechSynthesizer to mishandle European characters with accents on Linux.

version 6.4.10, April 21, 2024

• Function windows: fixed a problem that could cause Praat to crash when doing all after Group when windows had a different duration.

version 6.4.09, April 20, 2024

• TextGrid window: fixed a rare problem with Align interval that could lead to a zero-length interval.
• Windows ARM64 edition: fixed a bug that would cause Align interval to crash.
• Sound & TextGrid: Align interval... now also available in the Objects window.

version 6.4.08, April 14, 2024

• Windows: fixed a problem with the right and bottom edges of windows (half-visible scroll bars) for the Intel editions (the ARM64 edition still has this problem).
• Scripting: fixed a bug that could cause Praat to crash when an unknown choice was given to an option menu.
• MelSpectrogram: fixed a bug that could cause Praat to crash if a mel value was negative.
• DataModeler: improved confidence limits on estimated model parameters.

version 6.4.07, March 17, 2024

• The command Sound & Pitch: To PointProcess (cc), which is also used when computing the times of pulses in the Sound window, could cause Praat to freeze when the pitch ceiling (and the measured pitch) were very high; this problem existed since at least 2001.
• eSpeak: new version, with e.g. Tigrinya.
• Support for 119-dpi graphics on Windows.
• Repaired a bug that could cause the Artword windows to crash if the Time field was left empty.

version 6.4.06, February 25, 2024

• Sound files on Windows: corrected a bug (existing since July 2021) that prevented reading FLAC files with special characters in their names.
• FormantPathEditor without Sound: corrected several bugs that caused Praat to crash (such as Formant listing, using the Pitch menu...).
• Spectrogram painting: improved painting of very quiet spectrograms at extreme dynamic ranges.
• Scripting: folderExists.
• Scripting: home-relative paths (such as ~/sounds/*.wav) in more locations, such as fileNames$#, Create Strings as file list..., and createFolder.

version 6.4.05, January 27, 2024

• Many typos in manual.
• Made TIMIT label files readable on Windows.
• Prevented 8000 files from being read at start-up.
• Mac and Linux scripting: fileReadable now returns 0 if the argument is a folder (as already on Windows).

version 6.4.04, January 6, 2024

• Typo in example script in manual.
• ARM64 edition for Linux (Ubuntu 20.04 and up).
• ARM64 edition for Chromebook (2020 and later).