Create formant table (Peterson & Barney 1952)

A command to create a Table object filled with the fundamental frequency and the first three formant frequency values from 10 American-English monophthongal vowels as spoken in a /h_d/ context by 76 speakers (33 men, 28 women and 15 children). Every vowel was pronounced twice, so that there are 1520 recorded vowels in total.

## Table layout

The created table will contain 9 columns:

Column 1, labelled as Type
  speaker type: "m", "w" or "c" (for man, woman or child).
Column 2, labelled as Sex
  speaker sex: either "m" or "f" (for male or female).
Column 3, labelled as Speaker
  speaker id: a number from 1 to 76.
Column 4, labelled as Vowel
  the vowel name. The following list gives the vowel in a h_d context word together with its representation in this column: (heed, iy), (hid, ih), (head, eh), (had, ae), (hod, aa), (hawed, ao), (hood, uh), (who'd, uw), (hud, ah), (heard, er).
Column 5, labelled as IPA
  the IPA notation for the vowels as defined in Peterson & Barney (1952).
Column 6, labelled as F0
  the fundamental frequency in Hertz.
Column 7, 8 and 9, labelled as F1, F2 and F3
  the frequencies in Hertz of the first three formants.

## Remarks

We originally downloaded the data from the University of Pennsylvania FTP site, where they were reportedly based on a printed version supplied by Ignatius Mattingly.

About the IPA notation. We used the original notation from the Peterson & Barney article. The notation in Watrous (1991) differs for three vowels: Watrous uses /e, o, ɜ/ where Peterson & Barney use /ɛ, ɔ, ɜ˞/.

More details about these data and how they were measured can be found in the articlesWatrous (1991) and in Peterson & Barney (1952).

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