Package Exports

@4players/voice-filter
@4players/voice-filter/dist/index.js

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Readme

@4players/voice-filter

A WebAssembly-based real-time voice isolation filter for mono and stereo audio. This package provides a JavaScript wrapper for a low-latency denoising filter compiled from native code.

Features

WebAssembly-powered denoising filter
Mono and stereo support
Adjustable attenuation and post-filter parameters
Efficient audio buffer management
Simple async API

Installation

npm install @4players/voice-filter

Usage

import { Vif } from '@4players/voice-filter';

const filter = await Vif.create(true); // `true` for stereo

// Configure parameters
filter.attenuationLimit = 90;
filter.postFilterBeta = 0.5;

// Process audio
const input = new Float32Array(...); // Fill with input samples (20ms 48kHz stereo interleaved)
const output = new Float32Array(input.length);
const lsnr = filter.processFrame(input, output);

// Clean up
filter.close();

API

`Vif.create(stereo: boolean): Promise<Vif>`

Creates a filter instance. stereo determines mono/stereo mode.

Properties

frameLength: number — Frame length required per channel
attenuationLimit: number — dB limit for noise attenuation
postFilterBeta: number — Post-filter smoothing factor
stereo: boolean — Indicates stereo mode

`processFrame(input: Float32Array, output: Float32Array): number`

Processes a frame and returns a signal-to-noise ratio estimate.

`close()`

Unregisters internal memory buffers and destroys the filter instance.

License

MIT or APACHE-2.0