pretty-fast-fft

WebAssembly build of a small, pretty fast FFT library (PFFFT).

npm i pretty-fast-fft

pnpm add pretty-fast-fft

yarn add pretty-fast-fft

Examples

# web

# view source

example/web.ts

import { createRunner } from 'pretty-fast-fft'

const blockSize = 4096
const stepSize = 1024

const main = async () => {
  const runner = await createRunner(blockSize, stepSize)

  const buffer = await (await fetch('./test/fixtures/sound.ogg')).arrayBuffer()
  const ctx = new OfflineAudioContext(1, 1, 44100)
  const audioBuffer = await ctx.decodeAudioData(buffer)
  const floats = audioBuffer.getChannelData(0)

  const stft_magnitudes = runner.processAudio(floats)

  console.log(stft_magnitudes)
}

main()

This is simply npm packaging for this project:

https://github.com/JorenSix/pffft.wasm

API

# createRunner(blockSize, stepSize)

# blockSize  =  1024

number

# stepSize  =  128

number

createRunner(blockSize, stepSize)  =>

Promise<{
# destroy()

destroy()  =>

void

# processAudio(samples)

# samples

Float32Array

processAudio(samples)  =>

number [] []

}>

Contributing

Fork or edit and submit a PR.

All contributions are welcome!

License

MIT © 2022 stagas