| spectralslice {phonTools} | R Documentation |
Spectral Slice
Description
A function to plot the power spectrum of a vector representing a sound wave.
Usage
spectralslice (sound, padding = length(sound) * 2, fs = 1,
show = TRUE, add = FALSE, window = "kaiser",
windowparameter = 3, zeromax = TRUE, preemphasisf = 0, type,
line = FALSE, removeDC = TRUE, ...)
Arguments
sound |
A vector representing a sound wave, or a 'sound' object. |
padding |
The amount of zero-padding desired for the analysis, in number of samples. |
fs |
The sampling frequency of the sound. If a 'sound' object is passed this does not need to be specified. |
show |
If FALSE, no plot is created. |
add |
If TRUE, the spectrum is added to an existing plot. If FALSE a new one is created. |
window |
The window to be applied to the signal, applied by windowfunc(), provided in this package. |
windowparameter |
The parameter for the window to be applied to the signal, if appropriate. Passed to windowfunc(). |
zeromax |
If TRUE, the maximum dB is set to 0. |
type |
The line type to be used for plotting, passes its value to the 'lty' parameter. |
preemphasisf |
Preemphasis of 3 dB per octave is added to frequencies above the specified frequency. |
line |
If TRUE, a line spectrum is created. |
removeDC |
If TRUE, the DC component is removed. |
... |
any additional arguments will be passed to the internal calls of 'plot' or 'lines'. |
Value
A dataframe with the following elements is returned:
hz |
The center frequency of the analysis bins. |
dB |
The dB magnitude/power for the analysis bin. |
Author(s)
Santiago Barreda <sbarreda@ucdavis.edu>
Examples
## synthesize schwa-like vowel
#vowel = vowelsynth (ffs = c(500,1500,2500,3500,4500))$sound
## compare window lengths
#par (mfrow = c(3,1))
#spectralslice (vowel[500:550], fs = 10000)
#spectralslice (vowel[500:1000], fs = 10000)
## line spectrum
#spectralslice (vowel[500:600], padding = 0, line = TRUE, fs = 10000)