tuneR: noSilence – R documentation

Become an expert in R — Interactive courses, Cheat Sheets, certificates and more!

noSilence

Cut off silence from a Wave or WaveMC object

Description

Generic function to cut off silence or low noise at the beginning and/or at the end of an object of class Wave or class WaveMC.

Usage

noSilence(object, zero = 0, level = 0, where = c("both", "start", "end"))

Arguments

`object`	Object of class `Wave` or class `WaveMC`.
`zero`	The zero level (default: 0) at which ideal cut points are determined (see Details). A typical alternative would be 127 for 8 bit `Wave` or `WaveMC` objects. If `zero = NA`, the mean of the left Wave channel (for `Wave`, resp. the mean of the first channel for `WaveMC`) is taken as zero level.
`level`	Values in the interval between `zero` and `zero - level`/`zero + level` are considered as silence.
`where`	One of `"both"` (default), `"start"`, or `"end"` indicating at `where` to prepare the `Wave` or `WaveMC` object for concatenation.

Details

Silcence is removed at the locations given by where of the Wave or WaveMC object, where silence is defined such that (in both channels if stereo, in all channels if multichannel for WaveMC) all values are in the interval between zero - level and zero + level. All values before (or after, respectively) the first non-silent value are removed from the object.

Value

An object of class Wave or WaveMC.

Author(s)

Uwe Ligges ligges@statistik.tu-dortmund.de, Sarah Schnackenberg, based on code from Matthias Heymann's former package ‘sound’.