navigator.mediaDevices.getUserMedia({
	audio: true,
	video: true
})
	.then(function(stream) {
		const audioContext = new AudioContext();
		const analyser = audioContext.createAnalyser();
		const microphone = audioContext.createMediaStreamSource(stream);
		const scriptProcessor = audioContext.createScriptProcessor(2048, 1, 1);

		analyser.smoothingTimeConstant = 0.8;
		analyser.fftSize = 1024;

		microphone.connect(analyser);
		analyser.connect(scriptProcessor);
		scriptProcessor.connect(audioContext.destination);
		scriptProcessor.onaudioprocess = function() {
			const array = new Uint8Array(analyser.frequencyBinCount);
			analyser.getByteFrequencyData(array);
			const arraySum = array.reduce((a, value) => a + value, 0);
			const average = arraySum / array.length;
			console.log(Math.round(average));
			// colorPids(average);
		};
	})
	.catch(function(err) {
		/* handle the error */
		console.error(err);
	});