spectralslice: Spectral Slice

In phonTools: Tools for Phonetic and Acoustic Analyses

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 <[e-mail]>

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)

phonTools documentation built on Nov. 21, 2023, 1:07 a.m.