Class Analyser

An audio analyser effector that can be attached in the DSP graph to read waveform (time-domain) and frequency (spectrum) data using the Web Audio API's AnalyserNode.

It exposes pre-allocated typed-array buffers (Float32 and Uint8 variants) and provides helper methods to fill and return those buffers.

Example

import { Analyser } from "@fluex/fluexgl-dsp";

const analyser = new Analyser({
    fftSize: 2048,
    smoothingTimeConstant: 0.85,
    minDecibels: -90,
    maxDecibels: -10
});

await analyser.InitializeOnAttachment(audioContext);

const waveform = analyser.GetWaveformFloatData();
const spectrum = analyser.GetFrequencyByteData();

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Constructor

new Analyser(options?: Partial<AnalyserOptions>): Analyser;

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Properties

• label: string | null
• name: string
• analyserNode: AnalyserNode | null
• waveformFloat32ArrayBuffer: Float32Array
• waveformUint8ArrayBuffer: Uint8Array
• frequencyFloat32ArrayBuffer: Float32Array
• frequencyUint8ArrayBuffer: Uint8Array

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Methods

InitializeOnAttachment(context: AudioContext): Promise<void>

SetOptions(options: Partial<AnalyserOptions>): void

GetWaveformFloatData(): Float32Array | null

GetWaveformByteData(): Uint8Array | null

GetFrequencyFloatData(): Float32Array | null

GetFrequencyByteData(): Uint8Array | null