Gets transcript fragments in a given format.

This function gets fragments of transcripts from 'LaBB-CAT', converted to a given format (by default, Praat TextGrid).

getFragments(
  labbcat.url,
  id,
  start,
  end,
  layer.ids,
  mime.type = "text/praat-textgrid",
  path = ""
)

Arguments

labbcat.url

URL to the LaBB-CAT instance

id

The transcript ID (transcript name) of the sound recording, or a vector of transcript IDs.

start

The start time in seconds, or a vector of start times.

end

The end time in seconds, or a vector of end times.

layer.ids

A vector of layer IDs.

mime.type

Optional content-type - "text/praat-textgrid" is the default, but your LaBB-CAT installation may support other formats, which can be discovered using getSerializerDescriptors.

path

Optional path to directory where the files should be saved.

Value

The name of the file, which is saved in the current directory, or a list of names of files, if multiple id's/start's/end's were specified

If a list of files is returned, they are in the order that they were returned by the server, which *should* be the order that they were specified in the id/start/end lists.

Details

NB Although many formats will generate exactly one file for each interval (e.g. mime.type=text/praat-textgrid), this is not guaranted; some formats generate a single file or a fixed collection of files regardless of how many fragments there are.

Examples

if (FALSE) {
## Get the 5 seconds starting from 10s after the beginning of a recording
textgrid.file <- getFragments(labbcat.url, "AP2505_Nelson.eaf", 10.0, 15.0,
    c("transcript", "phonemes"), path="samples") 

## Load some search results previously exported from LaBB-CAT
results <- read.csv("results.csv", header=T)

## Get a list of fragment TextGrids, including the utterances, transcript, and phonemes layers
textgrid.files <- getFragments(
    labbcat.url, results$Transcript, results$Line, results$LineEnd,
    c("utterance", "word", "phonemes"))

## Get a list of fragment TextGrids
textgrid.files <- getFragments(
    labbcat.url, results$Transcript, results$Line, results$LineEnd)
}