Notes from Tuesday, July 25:

1) Choice of phonetic representation.
Jocelyn decided that she would choose F1 and F2 at 
steady state. 
Jeonghwa decided that she would choose F1 and F2 at
the vowel's midpoint (i.e., "50% ...")
Mira decided that she would choose F1 and F2 at the 
vowel's midpoint.
David decided that he would choose F1 and F2 at 
30% for something like the nucleus -- where "diphthong"
means /i, e, o, u/.

Jeonghwa asked "How do we mark the 50% point?"  

Answer: We write a script that loops through the files 
and pauses to let us mark the boundaries of each vowel 
in a TextGrid file, and then we write a second script 
that loops through the files again and inserts a pointer
to the 50% point (a bit of arithmetic involved, but not 
hairy...)
==> see scripts tagVowel.praat and insertMidPoint.praat
at http://ling.osu.edu/~mbeckman/795.10/scripts

Mira asked "But then how do we get the first and 
second formant values at those points, and write 
them to a txt file, so that we can read the numbers 
into R and plot them?"

Answer: We can write a script for that, but there are 
some decisions to make first...
==> see goals for next class

========================================================

Goals for class on Thursday, July 27:

1) Read the Hillenbrand et al. article, and think 
about what parameters we want to specify for the 
calculation of the formant values.

2) Start poking around in Praat to see if you can 
figure out how to make the formant calculation be 
the same as in Hillenbrand et al.

3) Be prepared to start writing a script that extracts
those values at the 30% point and the 50% point.