@caitun/lc3

Browser LC3 encoder and decoder powered by Google liblc3 compiled to WebAssembly.

Install

npm install @caitun/lc3

Usage

import { LC3Encoder, LC3Decoder } from '@caitun/lc3'

const encoder = await LC3Encoder.create({
  sampleRate: 16000,
  frameDurationUs: 10000,
  bitrate: 32000
})

const pcm = new Float32Array(encoder.frameSize)
const frame = encoder.encode(pcm)
encoder.close()

const decoder = await LC3Decoder.create({
  sampleRate: 16000,
  frameDurationUs: 10000,
  bitrate: 32000,
  frameBytes: frame.byteLength
})

const decoded = decoder.decode(frame)
decoder.close()

If your bundler serves WASM assets from a custom location, pass locateFile:

const encoder = await LC3Encoder.create({
  locateFile: (path) => `/assets/${path}`
})

Build

npm run build

build:wasm requires Emscripten emcc.