![]() There, you can upload the formant values found and get conclusive charts of your data. ![]() For detailed information on these methods visit. There are various methods for the vowel normalization. shape of head, neck and oral/nasal cavities) this will lead to slightly different realizations of the same vowel. Since everyone has different physiological preconditions (i.e. You can get good speaker specific results by just looking at the F1 and F2 values, but if you are comparing two speakers with each other you will need to normalize the values in order to get decent results. To get a diagram which resembles the classical vowel chart you need to change the axis so the x value rises from right to left and the y value from top to bottom. With Microsoft Excel or Open Office Calc you can create a diagram which contains the F1 and F2 values you found. When you have sufficient values of various vowels you can start to plot them. Make sure that you are measuring the vowel formants right in the middle of the vowel to get a clear value which is not affected by transition. To get the actual frequency of a formant we need to mark the place where we want to measure the formant and just press the F1 key for the F1 value, the F2 key for the F2 value and so on. By clicking on “Show Formants” under “Formants” in the top menu, Praat shows the formants in the spectrum as little red dots. To draw conclusions about the quality of vowels we need to look at the formant frequencies. The intensity too can tell us something about word stress within a sentence since the stressed syllables have a higher intensity than the unstressed syllables. In order to get the small pitch range, we need to do the same as before but now with non-initial highs and non-final lows. Then we need to subtract the final low value from the initial high value to get the wide pitch range. To get the average wide pitch range we need to measure the highest initial pitch and the lowest final pitch. By looking at the maxima and minima of the pitch in a sentence we can measure the so called small and wide pitch range. By looking at the pitch we can distinguish properties of intonation and word stress. The pitch function in Praat refers to the fundamental frequency of the sound file. Also, the voice onset time can be measured by reading the wave form. We can for example measure the length of vowels or syllables to draw conclusions about the speech rate. To start with, we can find clues about the speaker by just looking at the wave form of the sound data. ![]()
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