Microsoft Word Copy of vowels html

Figure 25: An FFT and LPC spectrum of target 1 of the vowel /ai/. The 
window is about 23 ms in length and the location of the window is shown by 
the vertical red and light blue lines. The LPC is calculated using 12 poles. Click 
anywhere on the image to hear the sound. 
The first target of /ai/ has clearly separated F1 and F2, an indistinct F3 and a 
barely evident F4. It seems that there might possibly be a spectral zero just 
above F2 and also possibly between F1 and F2 (although this might be an 
analysis artifact). There also appears to be a spectral zero at about 3000 Hz.

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Figure 26: An FFT and LPC spectrum of target 2 of the vowel /ai/. The 
window is about 23 ms in length and the location of the window is shown by 
the vertical red and light blue lines. The LPC is calculated using 12 poles. Click 
anywhere on the image to hear the sound. 
The second target of /ai/ has clearly evident and well separated F1, F2, F3 and 
F4. Its likely that there is a spectral zero immediately above F1 which probably 
accounts for the steep upper slope of this formant.