audio-timeline

audio-timeline
===

Observ object for arranging, trimming and adjusting multiple audio clips on a timeline using Web Audio.


Example

``js
var Timeline = require('audio-timeline')
var audioContext = new window.AudioContext() // Web Audio

var context = {
audio: audioContext,
output: audioContext.destination,
fs: require('fs'),
cwd: __dirname,
nodes: {
clip: require('audio-timeline/clip')
}
}

var timeline = Timeline(context)
timeline.set({
primary: [
{ node: 'clip',
src: 'audio/raw.wav',
startOffset: 0,
duration: 25
},
{ node: 'clip',
src: 'audio/raw.wav',
startOffset: 500,
duration: 30
},
{ node: 'clip',
src: 'audio/raw.wav',
startOffset: 1000,
duration: 16
}
]
})
`


$3

`js
var startAt = audioContext.currentTime + 0.1
var startOffset = 0
var duration = 71

timeline.start(startAt, startOffset, duration)
`

$3

`js
var RenderStream = require('audio-timeline/render-stream')
var WaveFileWriter = require('wav').FileWriter

var startOffset = 0
var duration = 71
var bitDepth = 16

var stream = RenderStream(timeline, startOffset, duration, bitDepth)

stream.pipe(WaveFileWriter('output.wav', {
bitDepth: bitDepth,
sampleRate: audioContext.sampleRate,
channels: 2
})).on('finish', function() {
console.log('done')
})

stream.progress(function(value) {
console.log(Math.round(value*100))
})
``