Batch Process Audio Files — batch

Process multiple audio files with a custom function. This replaces Praat's pattern of creating Strings objects and looping over files.

Usage

batch_process(
  directory,
  pattern = "\\.wav$",
  func,
  recursive = FALSE,
  parallel = FALSE,
  ncores = NULL,
  progress = TRUE,
  ...
)

Arguments

directory: Character path to directory containing audio files
pattern: Regular expression pattern to match files (default: "\\.wav$")
func: Function to apply to each file. Should accept a Sound object as first argument and return a named list or data frame row
recursive: Logical, search directories recursively (default: FALSE)
parallel: Logical, use parallel processing (default: FALSE)
ncores: Integer, number of cores for parallel processing (default: NULL = all-1)
progress: Logical, show progress bar (default: TRUE)
...: Additional arguments passed to func

Value

Data frame with results from all files

Examples

audio_dir <- tempfile("audio_")
dir.create(audio_dir)
tone <- Sound$create_tone(frequency = 150, duration = 0.3, sampling_rate =
 16000)
tone$save(file.path(audio_dir, "tone1.wav"))

results <- batch_process(
  directory = audio_dir,
  pattern = "\\.wav$",
  progress = FALSE,
  func = function(sound) {
    pitch <- sound$to_pitch()
    list(
      mean_f0 = pitch$get_mean(from_time = 0, to_time = 0, unit = "hertz"),
sd_f0 = pitch$get_standard_deviation(from_time = 0, to_time = 0, unit =
 "hertz")
    )
  }
)