Web Audio API AudioNode
Suite
Audio-Node-Suite is a JavaScript library, for use in the Browser
with the Web Audio API,
which provides a suite of Web Audio API compatible
AudioNode
classes:
-
AudioNodeComposite
: this is a convenient class for creating a custom composite/wrappingAudioNode
class. It is used internally and can be also used for creating your own custom composite/wrappingAudioNode
. As an additional goodie, the class provides a usefulbypass()
method for temporarily bypassing the effect of the underlyingAudioNode
instances. -
AudioNodeGain
,AudioNodeCompressor
,AudioNodeLimiter
: these are just convenient wrappers for the regular functionality provided by the Web Audio APIGainNode
andDynamicsCompressorNode
classes, providing thebypass()
functionality and some opinionated parameter defaults. -
AudioNodeEqualizer
: this is based on the Web Audio APIBiquadFilterNode
class and provides a convenient multi-band parametric equalizerAudioNode
. -
AudioNodeMeter
: this is based on the Web Audio APIAnalyzerNode
class and continuously tracks and measures the overall volume in decibel of the audio stream. It is also the internal base building block for theAudioNodeGate
andAudioNodeSpectrum
classes. -
AudioNodeGate
: this is based on the Web Audio APIGainNode
class and measures the volume in decibel of the audio stream and drains the volume if it drops below a certain decibel threshold. It is intended to act as a Noise Gate. -
AudioNodeSpectrum
: this is based onAudioNodeMeter
and hence the Web Audio APIAnalyzerNode
class to analyze the frequency/decibel spectrum of the audio stream and continuously render it in a (linear or logarithmic) scale to aCanvas
element in the DOM. -
AudioNodeVoice
: this is based onAudioNodeEqualizer
,AudioNodeGate
,AudioNodeCompressor
,AudioNodeGain
andAudioNodeLimiter
to provide a convenient singleAudioNode
which acts as a reasonable filter chain for voice. Its opinionated parameters are intentionally hard-coded and are just based on some experiences of the author.
$ npm install audio-node-suite
See the TypeScript definition for details on the provided Application Programming Interface (API).
Although Audio-Node-Suite is written in ECMAScript 2020, it is transpiled to older environments and this way runs in really all current (as of 2020) JavaScript environments, of course.
Copyright © 2020-2021 Dr. Ralf S. Engelschall <http://engelschall.com>
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