beat-match script improvments

this is a cool use of code to change colors of light, but could be much more efficient if it all ran in node instead of python, and would show off how to use API better:

import Analyser from 'audio-analyser'
import Generator from 'audio-generator'
import TPLSmartDevice from 'tplink-lightbulb'

const fftSize = 1024
const bufferSize = 44100

const analyser = new Analyser({
    // Magnitude diapasone, in dB
    minDecibels: -100,
    maxDecibels: -30,
 
    // Number of time samples to transform to frequency
    fftSize,
 
    // Number of frequencies, twice less than fftSize
    frequencyBinCount: fftSize / 2,
 
    // Smoothing, or the priority of the old data over the new data
    smoothingTimeConstant: 0.2,
 
    // Number of channel to analyse
    channel: 0,
 
    // Size of time data to buffer
    bufferSize
})

// resolve promise after some seconds
const sleep = seconds => new Promise(resolve => {
  setTimeout(resolve, seconds * 1000)
})

const loop = async () => {
  const freqData = analyser.getFrequencyData(fftSize)
  // TODO: do analysis here, and do stuff to lights
  await sleep(1)
  return loop()
}

const lights = {}
lights.white = new TPLSmartDevice('192.168.86.154') // LB120
lights.color = new TPLSmartDevice('192.168.86.153') // LB130

// TODO: do setup here to get audio into analyser
loop()

Need to do some research to resolve TODO’s

Also, I should figure out Kyle Dixon’s github name (got code from an email they sent.)

[blakewenloe]

This works! My only issue now is that the mic input is nowhere near as accurate as piping the audio straight to the analyzer.

mic
  .pipe(musicBeatDetector.getAnalyzer())
  .pipe(fs.createWriteStream("/dev/null"))
  .on("open", () => musicBeatScheduler.start());

[konsumer]

One idea might be to use my new crossaudio to do some analysis. It currently doesn’t have native (non-browser) mic-input setup, but should be pretty easy to add, and if nothing else could be used in a browser (like via electron or similar) to send commands to the lights.

Pretty sure the spectrum/bargraph stuff I am doing could be used to make lights act in a cool way with sound, even if not used to detect beats. this could sort of directly translate to “make a bunch of colored lights show something cool to music”