For each stimulus, highlight close to where the sound file begins and ends, about 30-50 ms before and after, though it doesn't need to be exact. Here is a summary of the steps you'll need to take:
#Textgrid praat how to#
It explains how to mark individual stimuli with intervals in a TextGrid and then pull out those words as individual sound files (using a PC, I'm not sure how well everything correlates to a Mac). Now that you're familiar with basic controls for Praat, follow the instructions in the attached pdf prepared by my colleague Ryan Lidster. You can stop a sound file from playing by pressing Esc on the keyboard. If you click on the bar labeled "Total duration", it will play the entire sound file. If you want to listen to just the part you zoomed in to, click on the bottom bar labeled "Visible part" or press Tab on the keyboard to play the selection. You can also toggle on and off other analysis tools, like formant tracking and glottal pulses, but you won't need to worry about those for cutting sound files. The blue line is pitch, which you can toggle off and on through the "Pitch" menu at the top. The darker the spectrogram is, the more energy there is at that frequency. The top shows the sound wave ("waveform") and the bottom shows the energy at different frequencies ("spectrogram"). Now you can see two different representations of the sound.
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