sound (version 1.4.5)

normalize: Rescale the Range of a Sample to [-1,1]

Description

Multiply the waveform of a Sample object or a wav file with a positive constant so that the maximum absolut value becomes 1, or any other specified constant.

Use this command before saving or playing a Sample object to avoid cracks in the sound caused by parts in the waveform that exceed the range [-1,1].

Usage

normalize(s, level=1)

Value

a Sample object with the specified maximum absolut value of the waveform.

Arguments

s

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

level

a number between 0 and 1 specifying the desired maximum absolute value of the waveform.

Author

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

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

See Also

Ops.Sample, center

Examples

if (FALSE) {
s <- .6*Sine(440,1)
plot(s)
plot(normalize(s)) # now it uses the full range
play(s)
play(normalize(s)) # this one is louder
}