amplitude.p5.js

let mic, timeline;

function setupAudio(){
	userStartAudio();
	
	mic = new p5.AudioIn();
	mic.start();
}

function setup() {
	createCanvas(windowWidth, windowHeight);
	timeline = [];
	setupAudio();
	background(30);
}

function draw(){
	background(30);
	stroke(255);
	noFill();
	timeline.push(mic.getLevel())
	console.log(timeline);
	
	while(timeline.length > 100){
	timeline.shift();
	}
	
	beginShape()
	for(let i = 0; i < timeline.length; i++){
		let x = map(i, 0, timeline.length, 0, width);
		let y = map(timeline[i]*10, 0, 1, height/2, 0);
		
		vertex(x, y)
	}
	endShape()
}