1.0.0 • Published 6 years ago
audio-noise v1.0.0
audio-noise 
Fill array or audio-buffer with defined type of noise.
let createNoise = require('audio-noise')
let noise = createNoise('pink')
//create array filled with pink noise
let arr = noise(Array(1024))createNoise(color|options?)
Create noise generator of specific color or based on options.
options
| Property | Default | Meaning |
|---|---|---|
type, color | 'white' | Color of noise. |
sampleRate | 44100 | Output data sample rate. |
channels | 1 | Output data number of channels. |
samplesPerFrame | 1024 | Default length of the block. |
format | 'float32' | Output data format, eg. 'uint8 interleaved', 'float32 planar', 'array', 'audiobuffer' etc. See pcm-convert and audio-format for list of available formats. |
color or options.color
| Value | Spectrum | Description |
|---|---|---|
'white' | Flat spectrum noise. See wiki. | |
'pink' | -3dB/octave. See wiki. | |
'brown' | -6dB/octave. See wiki. | |
'blue' | TODO +3dB/octave. | |
'violet' | TODO +6dB/octave. | |
'grey' | TODO White noise weighted by loudness curve, see a-weighting. Also see wiki | |
'green' | TODO |
noise(target|length?)
Fill passed audio-buffer or array with noise. Buffer is modified in-place.
const write = require('web-audio-write')()
const noise = require('./')({color: 'white', format: 'stereo audiobuffer'})
;(function tick(err) {
if (err) throw err
write(noise(), tick)
})()Related
- pull-audio-noise − audio-noise pull-stream source
- audio-noise-stream − audio-noise readable node stream
See also
- Colors of Noise − digest of colors of noise.
- white-noise-node, pink-noise-node, brown-noise-node − Web Audio API noise source nodes.
License
© 2017 Dmitry Yvanov @ audiojs. MIT License
1.0.0
6 years ago