Remove channels in wave files

remove_channels remove channels in wave files

Usage

remove_channels(files = NULL, channels, path = NULL, parallel = 1, pb = TRUE)

Arguments

files: Character vector indicating the files that will be analyzed. If not provided. Optional. then all wave files in the working directory (or path) will be processed.
channels: Numeric vector indicating the index (or channel number) for the channels that will be kept (left = 1, right = 2; 3 to inf for multichannel sound files).
path: Character string containing the directory path where the sound files are located. If NULL (default) then the current working directory is used.
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).
pb: Logical argument to control progress bar and messages. Default is TRUE.

Value

Sound files that have been converted are saved in the new folder "converted_sound_files". If `img = TRUE` then spectrogram images highlighting the silence segments that were removed are also saved.

Details

The function removes channels from wave files. It works on regular and multichannel wave files. Converted files are saved in a new directory ("converted_sound_files") and original files are not modified.

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

{
# save sound file examples
data("Phae.long1")
Phae.long1.2 <- stereo(Phae.long1, Phae.long1)

writeWave(Phae.long1.2, file.path(tempdir(), "Phae.long1.2.wav"))

remove_channels(channels = 1, path = tempdir())

#check this floder
tempdir()
}
#> [1] "/tmp/Rtmp17Mzdd"