noisew {seewave}

Generate noise

Description

This function generates noise.

Usage

noisew(f, d, type="unif", listen = FALSE, output = "matrix")

Arguments

f

sampling frequency of the signal to be generated (in Hz)

d

duration of the signal to be generated.

type

a character string to specify the type of noise, either "unif" or "gaussian".

listen

if TRUE the new sound is played back.

output

character string, the class of the object to return, either "matrix", "Wave", "Sample", "audioSample" or "ts".

Details

Uniform noise is generated using runif and gaussian noise is based on rnorm

Value

A new wave is returned. The class of the returned object is set with the argument output.

Author(s)

Jerome Sueur [e-mail]

See Also

synth, pulse

Examples

# add noise to a synthetic signal
a<-noisew(d=1,f=8000)
b<-synth(f=8000,d=1,cf=2000,plot=FALSE)
c<-a+b
spectro(c,f=8000)