To begin to divide a sound signal into intervals and label The different ways of dividing the same signal areĢ. Or as we will do in our next exercise, into voiceless and It into intervals corresponding words, syllables, and phonetic The basic idea is that one might want to divide a signal into It does this by means of what it calls a TextGrid. Praat allows you to divide up the sound signal into temporal stretches or intervals, and to assign text or labels to these Labeling sound signals using the TextGridġ. Resulting dialog box, the default name should be Sonnet.aiff, which is a good choice. From the Write menu, select Write to AIFF file. Before doing any analysis, save the Sound to a disk file, just in case. When you are finally satisfied, you can the name the sound you recorded in the box at the bottom of the panel (e.g., sonnet since the example that I use in the rest of these instructions is the first line of Shakespeare's Sonnet # 114), and then click To list: That will send what you have recorded to the list of Praat objects where it appears as Sound sonnet. To hear what you recorded, and toĭetermine that it is all right, click the Play button. When you are ready to record, Click the Record button and speak. When you talk into the microphone, you should see the meters in the middle of the panel move-soft sounds are green and near the bottom of the meter, loud sounds are red or yellow and near the top. Otherwise you can use the default or 44100. Sample rate: click the radio button next to 22050. Source: Click the Radio Button next to the appropriate source. Set the recording conditions in the panel like Figure 1. From the New menu, select Record Mono sound.Ĥ. When you have finished this, close System Preferences.ģ. Ideally, you want the recording level to peak about 3/4 of the way across the meter and you can adjust the Gain slider so as to achieve this. You should try to put your mouth about 5-10 inches from the microphone. When you do so, the level meter below should start to show activity when you speak into the microphone. Click on the sound source you will be using. You will see a Panel with several tabs along the top, labelled Sound Effects, Output, Input, etc. Go to the Apple Menu and select System Preferences, and among the available panes, choose Sound. Before launching Praat, you should set the input gain for the microphone that you are using. Making a sound recording and saving it to a fileġ. Louis Goldstein Recording and labeling in Praat
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