JS sample one

How-to-build-a-VR-CommLink-with-Google-Daydream-Part-1-Sample-1.js

import Tuna from 'tunajs'

/*
  Takes in the audio context and audio source declared by the WebAudioAPI. You'll
  need to set get access to the user's microphone and set up an audio node.

  Use this tutorial to start: https://www.html5rocks.com/en/tutorials/webaudio/intro/
*/
const processRadioTransmission = (audioContext, audioSource) => {
  var tuna = new Tuna(audioContext)

  // Filters out high and low freqs
  var filter = new tuna.Filter({
    frequency: 440,
    Q: 80,
    gain: 0,
    filterType: 'bandpass',
    bypass: 0
  })

  // Distorts audio
  var overdrive = new tuna.Overdrive({
    outputGain: 0,
    drive: 1,
    curveAmount: 0.65,
    algorithmIndex: 2,
    bypass: 0
  })

  var gainNode = audioContext.createGain()
  gainNode.gain.value = 0.05 // Careful with volume here!

  // Chains WebAudio nodes together to return processed audio buffer
  filter.connect(overdrive)
  audioSource.connect(overdrive)
  overdrive.connect(gainNode)
  gainNode.connect(audioContext.destination)
  // ^ After lowering volume, pass to destination for playing
}

export default processRadioTransmission