A-Tractor - v2.3.1
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    Class FrequencyAnalyzer

    Frequency analyzer widget.

    Example:

    const audioElement = document.getElementById('audio');
    const viewElement = document.getElementById('div-analyzer');

    const f = new FrequencyAnalyzer(audioElement, viewElement, { fftSize: 256,  color: '#ffb21d' });

    // We can start only after user starts interact with our page.
    // This is because of HTML Web Audio API restriction.
    document.body.onclick = () => {
      audioElement.play();
      f.start();
    }

    See more options at interface definition: common.IAbstractAnalyzerOptions

    Hierarchy (View Summary)

    Index

    Constructors

    constructor

    Methods

    changeAudioSource clear getAudioSource getViewElement pause resize start stop

    Constructors

    Methods

    • Changes the current media source.

      Parameters

      • OptionalaudioSource: HTMLMediaElement | MediaElementAudioSourceNode

        Input HTML element with source audio (HTML audio tag) or the instance of MediaElementAudioSourceNode.

      Returns void

    • Updates the canvas size depended on the [[constructor|viewElement]] size.

      Returns void

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