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audiosource

v3.0.3

Published

utility for managing audio buffers, playback, and visualizations

Downloads

12

Readme

AudioSource

NPM

A simple utility to manage audio playback.

The goal of AudioSource is to provide a simple interface to managing playback of audio source nodes. This includes tracking playback times, pause, resume, stop, and seeking. We also provide an analysernode and make loading sounds more convenient.

Usage

Initialize:

const AudioSource = require('audiosource');
const waveform = require('gl-waveform');

const aa = new AudioSource({
  // Path/url to load audio from _REQUIRED_
  src: 'path/to/audiofile',

  // function to call when sound has been loaded initially _required_
  onInitialLoad: () => {aa.play()}

  // this is just a standard web audio context, we will create one if
  // not provided _optional_
  context: context,

  // webaudio buffer _optional_
  buffer: webaudiobufferobject,

  // volume, defaults to 0.5 _optional_
  volume: 0.75
});

Attributes:

  • context: AudioContext
  • source: AudioBufferSourceNode
  • gainNode: GainNode
  • analyser: AnalyserNode
  • playing: Boolean value
  • src: path or url where sound was loaded from
  • buffer: AudioBuffer
  • currentTime: current playback time in seconds
  • volume: value passed to gainNode
  • duration: duration of loaded audio read only

Methods:

  • play: start playback
  • pause: pause playback
  • load: load new sound (accepts cb argument)
  • remove: useful for cleaning up
  • getByteFrequencyData: convenience method from analysernode
  • getByteTimeDomainData: convenience method from analysernode
  • getFloatFrequencyData: convenience method from analysernode
  • getFloatTimeDomainData: convenience method from analysernode

LICENSE

The MIT License (MIT)

Copyright (c) 2017 Dave Justice

Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.