Randy & V1ruS
Randy
Hey V1ruS, heard about this new music visualizer hack that syncs lights with every beat—think you can whip it up in a snap? Let's see who can crank up the hype first!
V1ruS
Yeah, I can spin something up. Just keep the lights on a low level, no one’s gonna trace me. Want a sneak peek?
Randy
Totally pumped—drop the beat, hit me with that sneak peek, and let’s light up the night!
V1ruS
Here’s a bare‑bones start.
```js
const mic = require('mic')
const fft = require('fft-js').fft
const fftUtil = require('fft-js').util
const myMic = mic({ rate: '44100', channels: '1' })
const stream = myMic.getAudioStream()
stream.on('data', data => {
const phasors = fft(Array.from(data))
const magnitudes = fftUtil.fftMag(phasors)
// Pick the 1‑5 Hz range for beats
const beat = magnitudes.slice(1, 6).reduce((a,b)=>a+b,0)
// Map beat to LED brightness (0‑255)
const brightness = Math.min(255, Math.max(0, beat * 10))
// send brightness to light controller here
})
myMic.start()
```
Run that, hook a cheap RGB strip to the controller, and you’ll get lights pulsing on each beat. Keep your IP hidden, though—no one likes a trace.
Randy
Nice slick start—just slap a little debounce on the beat calc and you’ll see the strip light up like a rave. Hook it to your controller, crank up the volume, and watch the glow sync to every thump. Keep it low‑key, but I’m buzzing to see the show!