cut_sels: Cut selections into individual sound files

In warbleR: Streamline Bioacoustic Analysis

Cut selections into individual sound files

Description

cut_sels cuts selections from a selection table into individual sound files.

Usage

cut_sels(
  X,
  mar = 0.05,
  parallel = 1,
  path = NULL,
  dest.path = NULL,
  pb = TRUE,
  labels = c("sound.files", "selec"),
  overwrite = FALSE,
  norm = FALSE,
  keep.stereo = FALSE,
  ...
)

Arguments

X	object of class 'selection_table', 'extended_selection_table' or data frame containing columns for sound file name (sound.files), selection number (selec), and start and end time of signals (start and end).
mar	Numeric vector of length 1. Specifies the margins adjacent to the start and end points of selections, delineating spectrogram limits. Default is 0.05.
parallel	Numeric. Controls whether parallel computing is applied. It specifies the number of cores to be used. Default is 1 (i.e. no parallel computing).
path	Character string containing the directory path where the sound files are located. If NULL (default) then the current working directory is used.
dest.path	Character string containing the directory path where the cut sound files will be saved. If NULL (default) then the directory containing the sound files will be used instead.
pb	Logical argument to control progress bar. Default is TRUE.
labels	String vector. Provides the column names that will be used as labels to create sound file names. Note that they should provide unique names (otherwise sound files will be overwritten). Default is c("sound.files", "selec").
overwrite	Logical. If TRUE sound files with the same name will be overwritten. Default is FALSE.
norm	Logical indicating whether wave objects must be normalized first using the function normalize. Additional arguments can be passed to normalize using '...'.' Default is FALSE. See normalize for available options.
keep.stereo	Logical. If TRUE both channels are kept in the clips, oterwise it will keep the channel referenced in the channel column (if supplied) or the first channel if a 'channel' column is not found in 'X'. Only applies to stereo (2-channel) files.
...	Additional arguments to be passed to the internal normalize function for customizing sound file output. Ignored if norm = FALSE.

Details

This function allow users to produce individual sound files from the selections listed in a selection table as in lbh_selec_table. Note that wave objects with a bit depth of 32 might not be readable by some programs after exporting. In this case they should be "normalized" (argument 'norm") with a lower bit depth. The function keeps the original number of channels in the output clips only for 1- and 2-channel files.

Value

Sound files of the signals listed in the input data frame.

Author(s)

Marcelo Araya-Salas ([e-mail]) and Grace Smith Vidaurre

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.

See Also

tailor_sels for tailoring selections

Examples

{
# save wav file examples
data(list = c("Phae.long1", "Phae.long2", "Phae.long3", "Phae.long4", "lbh_selec_table"))
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"))
writeWave(Phae.long4, file.path(tempdir(), "Phae.long4.wav"))

# cut selections
cut_sels(lbh_selec_table, path = tempdir())

#check this folder!!
tempdir()
}

warbleR documentation built on Sept. 11, 2024, 7:13 p.m.