soundgen (version 2.3.0)

hillenbrand: Formants in American vowels

Description

Relative frequencies of F1 and F2 (semitones above or below schwa based on estimated VTL) in American English, from Hillenbrand (1995), who measured F1-F4 in ~1.5K recordings (139 speakers, 12 vowels from each). Audio and formant measurements are freely available online: https://homepages.wmich.edu/~hillenbr/voweldata.html. The dataset below is the result of modeling Hillenbrand's data with brms: mvbind(F1rel, F2rel) ~ vowel. It shows the most credible location of each vowel centroid in the F1Rel-F2Rel space.

Usage

hillenbrand

Format

An object of class data.frame with 12 rows and 3 columns.

Details

A dataframe of 12 observations and 3 columns: "vowel" = vowel (American English), "F1Rel" and "F2Rel" = formant frequencies in semitones relative to their neutral, equidistant positions in a perfectly cylindrical vocal tract. See schwa - this is what schwa() returns as $ff_relative_semitones

References

Hillenbrand, J., Getty, L. A., Clark, M. J., & Wheeler, K. (1995). Acoustic characteristics of American English vowels. The Journal of the Acoustical society of America, 97(5), 3099-3111.

Examples

# NOT RUN {
plot(hillenbrand$F1Rel, hillenbrand$F2Rel, type = 'n')
text(hillenbrand$F1Rel, hillenbrand$F2Rel, labels = hillenbrand$vowel)
# }