reformatFormants: Reformat formants

In tatters/soundgen: Sound Synthesis and Acoustic Analysis

Reformat formants

Description

Internal soundgen function.

Usage

reformatFormants(
  formants,
  output = c("all", "freqs")[1],
  keepNonInteger = TRUE
)

Arguments

formants	character string like "aoiu", numeric vector like "c(500, 1500, 2400)", or a list with an entry for each formant
output	'all' (default) includes times stamps, freqs, amplitudes, and bandwidths; 'freqs' includes only frequencies
keepNonInteger	if FALSE, fractional (anti)formants like 'f1.5' are removed

Details

Checks that the formants are formatted in a valid way and expands them to a standard list of dataframes with time, frequency, amplitude, and bandwidth of each formant specified explicitly.

Examples

soundgen:::reformatFormants(NA)
soundgen:::reformatFormants('aau')
soundgen:::reformatFormants(c(500, 1500, 2500))
soundgen:::reformatFormants(list(f1 = 500, f2 = c(1500, 1700)))
soundgen:::reformatFormants(list(
     f1 = list(freq = 800, amp = 30),
     f2 = list(freq = c(1500, 1700, 2200), width = c(100, 150, 175))
))

f = list(f1 = c(550, 600), f2 = c(1100, NA, 1600), f2.5 = 2500, f3 = 3000)
soundgen:::reformatFormants(f)
soundgen:::reformatFormants(f, output = 'freqs')
soundgen:::reformatFormants(f, output = 'freqs', keepNonInteger = FALSE)

soundgen:::reformatFormants(c(500, 1400), output = 'freqs')
soundgen:::reformatFormants(list(f1 = 500, f2 = 1400), output = 'freqs')
soundgen:::reformatFormants(list(f1 = c(570, 750),
  f2 = NA, f3 = c(2400, 2200, NA)), output = 'freqs')

tatters/soundgen documentation built on Aug. 22, 2023, 4:24 p.m.