create_spectrogram_image_as_raster: Create spectrogram image as raster

In emuR: Main Package of the EMU Speech Database Management System

Create spectrogram image as raster

Description

Create spectrogram image as raster

Usage

create_spectrogram_image_as_raster(
  audioFilePath,
  begin = 0,
  end = 0,
  windowSizeInSecs = 0.01,
  alpha = 0.16,
  lowerFreq = 0,
  upperFreq = 5000,
  window = "GAUSS",
  dynRangeInDB = 70,
  audioChannel = 1,
  preEmphasisFilterFactor = 0.97,
  invert = FALSE
)

Arguments

audioFilePath	path to audio file to plot spectrogram of
begin	begin time in seconds (passed into begin parameter of wrassp::read.AsspDataObj)
end	end time in seconds (passed into end parameter of wrassp::read.AsspDataObj)
windowSizeInSecs	window size in seconds
alpha	value of spectrogram
lowerFreq	lower frequency limit of spectrogram
upperFreq	upper frequency limit of spectrogram
window	window type used in spectrogram calculation. Allowed values are: "BARTLETT" "BARTLETTHANN" "BLACKMAN" "COSINE" "GAUSS" (the default) "HAMMING" "HANN" "LANCZOS" "RECTANGULAR" "TRIANGULAR"
dynRangeInDB	dynamic range in DB of spectrogram
audioChannel	channel of audio file to draw spectrogram of (only applicable when using multi-channel audio files)
preEmphasisFilterFactor	used in time domain for amplifying high-freqs
invert	invert the colors of the spectrogram

Value

a image raster object

emuR documentation built on Nov. 4, 2023, 1:06 a.m.