Get formant frequency at a specific time (DEPRECATED) — get_formant_at

**DEPRECATED:** Use the R6 interface instead: `formant$get_value_at_time()`

Usage

get_formant_at_time(formant, formant_number, time, interpolate = FALSE)

Arguments

formant: A legacy praat_formant-shaped list: a plain list with a values element (a data.frame with columns time, formant_number, frequency, bandwidth) and a class attribute of "praat_formant". extract_formants() no longer produces this (it now returns an R6 Formant object instead — see its extract_formants documentation); build one by hand for this legacy function, or use formant$get_value_at_time() on an R6 Formant object directly instead of this deprecated wrapper.
formant_number: Which formant (1 = F1, 2 = F2, etc.)
time: Time in seconds
interpolate: Logical; if TRUE, interpolate between frames

Value

Formant frequency in Hz, or NA if undefined

Examples

# A praat_formant-shaped list (see the @param formant description
# above); built directly here for a self-contained example.
formant <- structure(
  list(
    values = data.frame(
      time = c(0.1, 0.1, 0.2, 0.2),
      formant_number = c(1, 2, 1, 2),
      frequency = c(500, 1500, 520, 1480),
      bandwidth = c(80, 120, 85, 110)
    ),
    n_frames = 2,
    n_formants = 2
  ),
  class = "praat_formant"
)
get_formant_at_time(formant, formant_number = 1, time = 0.15)
#> Warning: get_formant_at_time() is deprecated and will be removed in v6.0.0. Use the R6 interface: formant$get_value_at_time(formant_number, time)
#> [1] 500