qb_vowels {nzilbb.vowels} | R Documentation |
Formants from QuakeBox 1
Description
A dataset containing formant values, amplitude, articulation rate, and following segment data for 10 New Zealand English monophthongs, along with participant demographics.
Usage
qb_vowels
Format
A data frame with 26331 rows and 14 variables:
- speaker
Anonymised speaker code (char).
- vowel
Wells lexical sets for 10 NZE monophthongs. Levels: DRESS, FLEECE, GOOSE, KIT, LOT, NURSE, START, STRUT, THOUGHT, TRAP, FOOT (char).
- F1_50
First formant in Hz, extracted from vowel mid-point using LaBB-CAT interface with Praat.
- F2_50
Second formant in Hz, extracted from vowel mid-point using LaBB-CAT interface with Praat.
- participant_age_category
Age category of speaker. Values: 18-25, 26-35, 36-45, ..., 76-85 (char).
- participant_gender
Gender of participant. Values: M, F (char).
- participant_nz_ethnic
New Zealand ethnic category of participant. Values: NZ mixed ethnicity, NZ European, Other (char).
- word_freq
Frequency of word from which vowel token is taken in CELEX.
- word
Anonymised word id (char).
- time
Time in seconds at which vowel segment starts.
- vowel_duration
Length of vowel in seconds.
- articulation_rate
Articulation rate of utterance from which token is taken.
- following_segment_category
Category of following segment. NB: liquids have already been removed. Levels: labial, velar, other (factor).
- amplitude
Maximum amplitude of word from which vowel token is taken, generated by LaBB-CAT interface with Praat.
Details
Original data was generated for Wilson Black et al. (2023).
Source
References
Wilson Black, Joshua, Jennifer Hay, Lynn Clark & James Brand (2023): The overlooked effect of amplitude on within-speaker vowel variation. Linguistics Vanguard. Walter de Gruyter GmbH. 9(1). 173–189. doi:10.1515/lingvan-2022-0086