![]() ![]() Tg.insertSpace(start, duration, collisionCode) will insert a blank segment into a textgrid. The erased segment can be left blank, or the textgrid can shrink Tg.eraseRegion(start, stop, doShrink) will erase a segment of a textgrid. Tg.appendTextgrid(tg2) will append tg2 to the end of tg-modifying all of the times in tg2 so that they appear chronologically after tg. But there are some other functions which I'll mention briefly here. The above featured functions are perhaps the most useful functions in praatio. There is a more condensed version of the TextGrid which contains the same information but without the extraneous text that makes the below example so easy to read. They too have a few properties defined, followed by the intervals and points that they contain. Then the tiers are presented in order of appearance. The TextGrid has a few properties defined-min and max times (the start and end of textgrid with respect to the audio file) and the number of tiers. Praat has its own plain text format for working TextGrids. And 'maxF0' marks the highest peaks of the pitch contour (the blue curve superimposed over the spectrogram) for each word. 'phone' marks the phonemes-the consonants and vowels of the words. In this example the textgrid contains two interval tiers and a point tier (named 'phone', 'word', and 'maxF0' respectively). Etc.īelow is a sample textgrid as seen in Praat, with accompanying wavfile. PointTiers are used for annotating instaneous events. IntervalTiers are used to annotate events that have duration. There are two kinds of tiers: IntervalTiers and PointTiers. ![]() Each layer of analysis is known as a tier. More specifically, a TextGrid, used by Praat or PraatIO, is a collection of independent annotation analyses for a given audio recording. Praat calls its transcript files TextGrids, and the same terminology is used here. The heart of any speech analysis is a transcript. ![]()
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