sound (version 1.4.5)

channels: Number of Channels of a Sample Object

Description

Get or set the number of channels of a Sample object or a wav file.

Usage

channels(s)
channels(s) <- value
setChannels(s,value)

Value

For channels, the number of channels of the sample (1 for mono, 2 for stereo).

For setChannels, a Sample object with the new channels parameter.

Arguments

s

a Sample object, or a string giving the name of a wav file.

value

1 for mono, or 2 for stereo.

Author

Author: tools:::Rd_package_author("sound")

Maintainer: tools:::Rd_package_maintainer("sound")

Details

The replacement form can be used to reset the number of channels of a Sample object (here, filenames are not accepted).

If a mono sample is transformed into a stereo sample, each channel of the stereo sample equals the waveform of the mono sample. If a stereo Sample is transformed to a mono sample, (left(s)+right(s))/2 is returned.

See Also

fitSampleParameters

Examples

if (FALSE) {
s <- stereo(Sine(440,1),Sine(220,1))
channels(s)  # 2
play(s)
channels(s) <- 1  # now a mono sample
play(s)
}