seewave (version 1.7.6)

dynoscillo: Dynamic oscillogram

Description

This graphical function displays a time wave as an windowed oscillogram.

Usage

dynoscillo(wave, f, wd = NULL, wl = NULL, wnb = NULL, title = TRUE, ...)

Arguments

wave

an R object.

f

sampling frequency of wave (in Hz). Does not need to be specified if embedded in wave.

wd

a numerical vector, duraiton of the window (in seconds)

wl

a numerical vector, length of the window (in number of points).

wnb

a numerical vector, number of windows (no unit).

title

a logical, if TRUE displays a title with information regarding window size and number.

...

other plot graphical parameters.

Details

The arguments wd, wl and wn have to be used isolated, not in conjunction. They basically do the same, ie they set the duration of the zooming window that is slided along the signal. For instance, for a 5 seconds sound with a sampling rate (f) at 44.1 kHz, wl = 4096 is equivalent to wd = 4096 / 44100 = 0.093 s and equivalent to wnb = 5*4096 / 44100 = 53.

See Also

oscillo, oscilloST, dynspec.

Examples

require(rpanel)
data(tico)
dynoscillo(tico, wn=4)