https://github.com/stagas/pretty-fast-fft

WebAssembly build of a small, pretty fast FFT library (PFFFT).
https://github.com/stagas/pretty-fast-fft

Last synced: 13 days ago
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WebAssembly build of a small, pretty fast FFT library (PFFFT).

• Host: GitHub
• URL: https://github.com/stagas/pretty-fast-fft
• Owner: stagas
• License: mit
• Created: 2022-09-05T06:34:11.000Z (about 2 years ago)
• Default Branch: main
• Last Pushed: 2022-12-28T07:19:52.000Z (almost 2 years ago)
• Last Synced: 2024-08-10T10:57:38.683Z (3 months ago)
• Language: TypeScript
• Size: 73.2 KB
• Stars: 3
• Watchers: 2
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

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README

        




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  


```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](https://github.com/stagas/pretty-fast-fft/fork) or [edit](https://github.dev/stagas/pretty-fast-fft) and submit a PR.

All contributions are welcome!

## License

MIT © 2022 [stagas](https://github.com/stagas)