sonicscrewdriver (version 0.0.7)

windowing: Windowing Function for Wave Objects

Description

Separates a Wave object into windows of a defined length and runs a function on the window section. Windows may overlap, and the function can make use of 'parallel' package for multi-core processing. It will also show a progress bar if the 'pbapply' package is installed.

Usage

windowing(
  wave,
  window.length = 1000,
  FUN,
  window.overlap = 0,
  bind.wave = FALSE,
  complete.windows = TRUE,
  cluster = NULL,
  ...
)

Arguments

wave

A Wave object or filename. Using filenames may save loading an entire large file into memory.

window.length

The length of the analysis window (in samples).

FUN

FUN to be applied to windows.

window.overlap

The overlap between successive windows (in samples), a negative value will result in a gap between windows.

bind.wave

If TRUE and FUN returns wave objects, then these are combined into a single object

complete.windows

If TRUE (default) the final window will not be processed unless it has a length equal to window.length.

cluster

A cluster form the 'parallel' package for multi-core computation.

...

Additional parameters to FUN

Examples

if (FALSE) {
windowing(wave, window.length=1000, FUN=duration, window.overlap=0, bind.wave=TRUE)
}