The MediaElementAudioSourceNode() constructor creates a new MediaElementAudioSourceNode object instance.
new MediaElementAudioSourceNode(context, options)contextAn AudioContext representing the audio context you want the node to be associated with.
optionsAn object defining the properties you want the MediaElementAudioSourceNode to have:
mediaElementAn HTMLMediaElement that will be used as the source for the audio.
channelCountAn integer used to determine how many channels are used when up-mixing and down-mixing connections to any inputs to the node. (See AudioNode.channelCount for more information.) Its usage and precise definition depend on the value of channelCountMode.
channelCountModeA string describing the way channels must be matched between the node's inputs and outputs. (See AudioNode.channelCountMode for more information including default values.)
channelInterpretationA string describing the meaning of the channels. This interpretation will define how audio up-mixing and down-mixing will happen. The possible values are "speakers" or "discrete". (See AudioNode.channelInterpretation for more information including default values.)
A new MediaElementAudioSourceNode object instance.
const ac = new AudioContext();
const mediaElement = document.createElement("audio");
const myAudioSource = new MediaElementAudioSourceNode(ac, {
mediaElement,
});