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Dysphonia Severity Index (DSI) Analysis (pladdrr)

lst_dsi.Rd

Compute the Dysphonia Severity Index (DSI) using pladdrr. DSI is a multiparametric voice quality assessment combining maximum phonation time, softest intensity, highest fundamental frequency, and jitter.

Usage

lst_dsi(softDF, highpitchDF, maxprolongedDF, stableDF = NULL, use.calibration = FALSE, db.calibration = 10, speaker.name = NULL, speaker.ID = NULL, speaker.dob = NULL, session.datetime = NULL, pdf.path = NULL, simple.output = FALSE, overwrite.pdfs = FALSE, praat_path = NULL, toFile = FALSE, return_jstf = FALSE, explicitExt = "dsi", outputDirectory = NULL)

Arguments

softDF

Data frame with soft phonation samples. Columns: absolute_file_path, start, end

highpitchDF

Data frame with high pitch samples. Columns: absolute_file_path, start, end

maxprolongedDF

Data frame with maximally prolonged vowel samples. Columns: absolute_file_path, start, end

stableDF

Data frame with stable vowel samples for jitter (optional, defaults to maxprolongedDF)

use.calibration

Logical. Apply calibration to intensity measurements. Default FALSE

db.calibration

Numeric. Calibration factor in dB. Default 10

speaker.name

Character. Speaker name (optional, for identification)

speaker.ID

Character. Speaker ID (optional, for file naming)

speaker.dob

Character. Speaker date of birth (optional)

session.datetime

Character. Session datetime (optional)

pdf.path

Character. Path for PDF output (not implemented in pladdrr version)

simple.output

Logical. Simplified output (not used in pladdrr version)

overwrite.pdfs

Logical. Overwrite PDFs (not used in pladdrr version)

praat_path

Character. Praat path (not used in pladdrr version)

toFile

Logical. Write to JSTF file? Default FALSE

return_jstf

Logical. Return JsonTrackObj instead of data.frame? Default FALSE. When both toFile and return_jstf are TRUE, the file is written AND the object returned.

explicitExt

Character. Output file extension. Default "dsi"

outputDirectory

Character. Output directory. NULL = first file's directory. Default NULL

Value

If toFile=FALSE, list with 6 elements:

ID

Speaker ID

Maximum_phonation_time

MPT in seconds

Softest_intensity_of_voiced_speech

Minimum intensity in dB

Maximum_fundamental_frequency

Maximum F0 in Hz

Jitter_ppq5

5-point period perturbation quotient (%)

Dysphonia_Severity_Index

DSI composite score

If toFile=TRUE, invisibly returns output file path.

Details

DSI Formula (Wuyts et al., 2000): DSI = 1.127 + 0.164MPT - 0.038I-low + 0.0053F0-high - 5.30Jitter

References

(Wuyts et al. 2000)

Examples

if (FALSE) { # \dontrun{
# Example DSI analysis
soft <- data.frame(
  absolute_file_path = "soft1.wav",
  start = 0,
  end = 2
)

high <- data.frame(
  absolute_file_path = "high1.wav",
  start = 0,
  end = 1.5
)

prolonged <- data.frame(
  absolute_file_path = c("vowel1.wav", "vowel2.wav"),
  start = c(0, 0),
  end = c(5, 6)
)

result <- lst_dsi(
  softDF = soft,
  highpitchDF = high,
  maxprolongedDF = prolonged,
  speaker.ID = "P001"
)

print(result)
} # }