![]() ![]() Depending on the type of experiment, it can get confusing to name your files as simply the (non)word that they are, because then you won't have information about the condition or contrast they're being used in, which could make analyses more difficult. You should have a spreadsheet in which you've prepared the file names for each stimulus. the where the sound wave at the top crosses over zero) so you don't get clicking noises (if you've already hit enter, you can move the boundaries to the nearest zero crossing by going to "boundary" in the top menu).ģ. Before you hit enter to make the boundaries, hit Ctrl + comma and Ctrl + period (or Command + comma and Command + period with a Mac) to make sure the boundaries are at zero crossings (i.e. In general, you don't want the amount of silence before and after your stimuli to vary greatly, because this will affect your interstimulus interval (ISI) later. 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: 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. ![]()
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |