A library for working with praat, textgrids, time aligned audio transcripts, and audio files.
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A library for working with praat, time aligned audio transcripts, and audio files that comes with batteries included. Praat uses a file format called textgrids, which are time aligned speech transcripts. This library isn’t just a data struct for reading and writing textgrids–many utilities are provided to make it easy to work with with transcripts and associated audio files. This library also provides some other tools for use with praat.
Praat is an open source software program for doing phonetic analysis and annotation of speech. Praat can be downloaded here
What can you do with this library?
query a textgrid to get information about the tiers or intervals contained within:
tg = tgio.openTextGrid("path_to_textgrid") entryList = tg.tierDict["speaker_1_tier"].getEntries() # Get all intervals entryList = tg.tierDict["phone_tier"].find("a") # Get all instances of 'a'
create or augment textgrids using data from other sources
found that you clipped your audio file five seconds early and have added it back to your wavefile but now your textgrid is misaligned? Add five seconds to every interval in the textgrid:
tg = tgio.openTextGrid("path_to_textgrid") moddedTG = tg.editTimestamps(5, 5, 5) moddedTG.save('output_path_to_textgrid')
manipulate an audio file based on information in a textgrid:
see splitAudioOnTier() in /praatio/praatio_scripts.py
remove all intervals (and associated intervals in other tiers) that don’t match a query.:
# This would remove all words that are not content words from the word_tier # and also remove their associated phone listings in the phone_tier tg = tgio.openTextGrid("path_to_textgrid") print(tg.tierNameList) >> ["word_tier", "phone_tier"] subTG = tg.getSubtextgrid("word_tier", isContentWord, True) subTG.save('output_path_to_textgrid')
utilize the klattgrid interface to raise all speech formants by 20% (among other possible manipulations):
tg = tgio.openTextGrid("path_to_textgrid") incrTwenty = lambda x: x * 1.2 kg.tierDict["oral_formants"].modifySubtiers("formants",incrTwenty) kg.save(join(outputPath, "bobby_twenty_percent_less.KlattGrid"))
replace labeled segments in a recording with silence or delete them
use set operations (union, intersection, difference) on textgrid tiers
There are tutorials available for learning how to use PraatIO. These are in the form of IPython Notebooks which can be found in the /tutorials/ folder distributed with PraatIO.
You can view them online using the external website Jupyter:
Ver 3.6 (May 05, 2017)
Major clean up of tgio
- Ver 3.6 is not backwards compatible with previous versions of PraatIO. Lots of changes to tgio.
Tutorials folder added
Ver 3.5 (April 04, 2017)
- Added code for reading, writing, and manipulating audio files (praatio.audioio)
- eraseRegion() and insertRegion() added to textgrids and textgrid tiers
Ver 3.4 (February 04, 2017)
Added place for very specific scripts (praatio.applied_scripts)
- added code for using with input and output textgrids to SPPAS, a forced aligner
Lots of minor features and bugfixes
Ver 3.3 (June 27, 2016)
Find zero-crossings in a wave file
- for shifting all boundaries in a textgrid see praatio_scripts.tgBoundariesToZeroCrossings()
- for finding individual zero crossings, see praatio_scripts.findNearestZeroCrossing()
- pitch extraction is now ten times faster
- automatic pitch halving/doubling detection
- median filtering
- set operations over two tiers (union, difference, or intersection)
- erase a section of a textgrid (and a section of the corresponding wave file)
Extraction of pitch formants using praat
Lots of small bugfixes
Ver 3.2 (January 29, 2016)
- Float precision is now preserved in file I/O
- Integration tests added; using Travis CI and Coveralls for build automation.
- Lots of small bugfixes
- Moved point processes into 1D and 2D point objects
Ver 3.1 (December 16, 2015)
- Support for reading/writing point processes
Ver 3.0 (November 10, 2015)
- Support for reading and writing klattgrids
Ver 2.1 (July 27, 2015)
- Addition of praatio_scripts.py where commonly used scripts will be placed
- Import clash led to praatio.py being renamed to tgio.py
Ver 2.0 (February 5, 2015)
- Support for reading, writing, and manipulating point tiers
- Ported to python 3
- Major cleanup/reorganizing of code
Ver 1.0 (August 31, 2014)
- Reading and writing of textgrids
- Support for reading, writing, and manipulating interval tiers
Python 2.6.* or above
Python 3.3.* or above (actually, probably any version of python 3)
99% of the time you’re going to want to run:
from praatio import tgio tg = tgio.openTextGrid(r"C:\Users\tim\Documents\transcript.TextGrid")
Or if you want to work with KlaatGrid files:
from praatio import kgio kg = kgio.openKlattGrid(r"C:\Users\tim\Documents\transcript.KlattGrid")
See /test for example usages
If you on Windows, you can use the installer found here (check that it is up to date though) Windows installer
PraatIO is on pypi and can be installed or upgraded from the command-line shell with pip like so:
pip install praatio --upgrade
Otherwise, to manually install, after downloading the source from github, from a command-line shell, navigate to the directory containing setup.py and type:
python setup.py install
If python is not in your path, you’ll need to enter the full path e.g.:
C:\Python27\python.exe setup.py install
PraatIO is general purpose coding and doesn’t need to be cited but if you would like to, it can be cited like so:
Tim Mahrt. PraatIO. https://github.com/timmahrt/praatIO, 2016.
Development of PraatIO was possible thanks to NSF grant BCS 12-51343 to Jennifer Cole, José I. Hualde, and Caroline Smith and to the A*MIDEX project (n° ANR-11-IDEX-0001-02) to James Sneed German funded by the Investissements d’Avenir French Government program, managed by the French National Research Agency (ANR).