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Measure the duration of sound files

Source: R/duration_sound_files.R
duration_sound_files.Rd

duration_sound_files measures the duration of sound files

Usage

duration_sound_files(
  files = NULL,
  path = NULL,
  skip.error = FALSE,
  file.format = "\\.wav$|\\.wac$|\\.mp3$|\\.flac$"
)

Arguments

files

Character vector with the names of the sound files to be measured. The sound files should be in the working directory or in the directory provided in 'path'.

path

Character string containing the directory path where the sound files are located.

skip.error

Logical to control if errors are omitted. If so, files that could not be read will return NA in the 'duration' column. Default is FALSE, which will return an error if some files are problematic. If NULL (default) then the current working directory is used.

file.format

Character string with the format of sound files. By default all sound file formats supported by warbleR are included ("\.wav$|\.wac$|\.mp3$|\.flac$"). Note that several formats can be included using regular expression syntax as in grep. For instance "\.wav$|\.mp3$" will only include .wav and .mp3 files.

Value

A data frame with the duration (in seconds) of the sound files.

Details

This function returns the duration (in seconds) of sound files.

References

Araya-Salas, M., & Smith-Vidaurre, G. (2017). warbleR: An R package to streamline analysis of animal acoustic signals. Methods in Ecology and Evolution, 8(2), 184-191.

Author

Marcelo Araya-Salas (marcelo.araya@ucr.ac.cr)

Examples

{
  data(list = c("Phae.long1", "Phae.long2", "Phae.long3"))
  writeWave(Phae.long1, file.path(tempdir(), "Phae.long1.wav"))
  writeWave(Phae.long2, file.path(tempdir(), "Phae.long2.wav"))
  writeWave(Phae.long3, file.path(tempdir(), "Phae.long3.wav"))

  duration_sound_files(path = tempdir())
}
#>         sound.files  duration
#> 1  Phae.long1-1.wav 0.2730667
#> 2  Phae.long1-2.wav 0.2630667
#> 3  Phae.long1-3.wav 0.2749333
#> 4    Phae.long1.wav 2.5000444
#> 5  Phae.long2-1.wav 0.2325778
#> 6  Phae.long2-2.wav 0.2261333
#> 7    Phae.long2.wav 1.7000444
#> 8  Phae.long3-1.wav 0.2312444
#> 9  Phae.long3-2.wav 0.2301778
#> 10 Phae.long3-3.wav 0.2312000
#> 11   Phae.long3.wav 2.2000000
#> 12 Phae.long4-1.wav 0.2454222
#> 13 Phae.long4-2.wav 0.2441778
#> 14 Phae.long4-3.wav 0.2451111
#> 15   Phae.long4.wav 3.2000000