Class HighPassFilter

A high-pass filter audio effector that attenuates frequencies below a configurable cutoff frequency. It is commonly used to remove low-frequency rumble, DC offsets, or to thin out signals in a mix.

Internally this effector is based on the Web Audio API BiquadFilterNode with highpass type.

Example

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

const highPass = new HighPassFilter({
    frequency: 200,
    q: 0.7
});

await highPass.InitializeOnAttachment(audioContext);

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Constructor

new HighPassFilter(options?: Partial<HighPassFilterOptions>): HighPassFilter;

Arguments

• options?: Partial<HighPassFilterOptions>
  Optional high-pass filter configuration options.

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Properties

label: string | null

Custom label for this effector. Defaults to "HighPassFilter".

name: string

Internal name for this effector. Defaults to "HighPassFilter".

filterNode: BiquadFilterNode | null

Underlying Web Audio API filter node. Available after initialization.

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Methods

InitializeOnAttachment(context: AudioContext): Promise<void>

Initializes the high-pass filter by creating a BiquadFilterNode with type = "highpass" and applying the configured options.

Arguments

• context: AudioContext
  The audio context used to construct the filter node.

Returns

• Promise<void>

---

SetOptions(options: Partial<HighPassFilterOptions>): void

Applies filter parameters such as cutoff frequency and Q factor. Live-updates the internal BiquadFilterNode when available.

Arguments

• options: Partial<HighPassFilterOptions>
  Options to apply.

Returns

• void