Compute the emobase openSMILE feature set

This function applies the emobase openSMILE (Eyben et al. 2010) configuration to compute 988 acoustic features reasoned to be part of perception of emotion.

Usage

lst_emobase(listOfFiles, beginTime = 0, endTime = 0, explicitExt = "emb", verbose = FALSE, toFile = FALSE, return_jstf = FALSE, outputDirectory = NULL)

Arguments

listOfFiles

The full path to the sound file.

beginTime

The starting time of the section of the sound files that should be analysed.

endTime

The end time of the section of the sound files that should be analysed.

explicitExt

The file extension of the slice file where the results should be stored. Default "emb".

verbose

Logical. Print processing information (default: FALSE).

toFile

Logical. If TRUE, write results to JSTF file. Default FALSE.

return_jstf

Logical. Return JsonTrackObj instead of list? Default FALSE. When both toFile and return_jstf are TRUE, writes the file AND returns the object.

outputDirectory

Character. Output directory path. Default NULL (use input directory).

Value

If return_jstf=FALSE and toFile=FALSE (default), a list of 988 acoustic values. If toFile=TRUE, invisibly returns the path(s) to the written JSTF file(s). If return_jstf=TRUE, returns a JsonTrackObj.

References

Eyben F, Wöllmer M, Schuller B (2010). Opensmile: the munich versatile and fast open-source audio feature extractor, the international conference. ACM. ISBN 978-1-60558-933-6. doi:10.1145/1873951.1874246 . http://dl.acm.org/citation.cfm?id=1874246.

Examples

if (FALSE) { # \dontrun{
# Using C++ implementation (default, fastest)
emobase <- lst_emobase("audio.wav")

# With time windowing
emobase <- lst_emobase("audio.wav", beginTime = 1.0, endTime = 3.0)

# Write results to JSTF file
lst_emobase("audio.wav", toFile = TRUE)  # Creates audio.emb

# Read back and convert to data.frame
track <- read_track("audio.emb")
df <- as.data.frame(track)
head(df)  # Shows begin_time, end_time, and all 988 emobase features
} # }