npvi_v: nPVI V

In congzhang365/rhythm.metrics: Analyse and Visualise Rhythm Metrics

nPVI V

Description

This function loads a dataframe as input and returns a dataframe containing the mean values of nPVI of vowels

Usage

npvi_v(df, v_label, utterance_id, cv_duration)

Arguments

df:	a data frame containing cv_labels, utterance_id, and cv_duration values.
v_label:	a string to filter the vowels, e.g. v_label = 'V' or v_label = 'vowel'
utterance_id:	each unique utterance should have a unique id
cv_duration:	the duration of C or V (only the values for vowels will be used)

Details

nPVI V is a rhythm metrics based on Grabe, E., & Low, E. L. (2002). Durational variability in speech and the rhythm class hypothesis. In Laboratory phonology 7 (pp. 515-546). De Gruyter Mouton. It calculates the normalised sum of the absolute differences between pairs of consecutive vocalic intervals divided by the number of pairs in the speech sample.

Value

npvi_v: a data frame containing the mean values of npvi for vowels

Author(s)

Cong Zhang, [e-mail]

Examples

df <- data.frame (cv_label  = c("consonant", "vowel", "consonant", "vowel",
                                "consonant", "vowel", "consonant", "vowel",
                                "consonant", "vowel", "consonant", "vowel",
                                "consonant", "vowel", "consonant", "vowel"),
utterance_id = c("utt_1", "utt_1", "utt_1", "utt_1",
                 "utt_2", "utt_2", "utt_2", "utt_2",
                 "utt_3", "utt_3", "utt_3", "utt_3",
                 "utt_4", "utt_4", "utt_4", "utt_4"),
cv_duration = c(0.1, 0.8, 0.2, 0.5, 0.3, 0.3, 0.4, 0.7,
                0.3, 0.88, 0.5, 0.9, 0.3, 0.57, 0.4, 0.97))

npvi_v(df, v_label="vowel", utterance_id, cv_duration)

congzhang365/rhythm.metrics documentation built on March 31, 2024, 5:57 p.m.