createCanvas(windowWidth, windowHeight);

    setupAudio();

}

​

function draw() {

    updateAudio();

    background(0);

    // should move with microphone.. not working...

    fill(255)

    ellipse(mouseX, mouseY, amp) // amp aka mic.getLevel() isn't working in firefox..

​

​

    // fft works fine.. so audio is working

    for(let i = 0; i < fft.length; i++) {

        let freq = fft[i];

        let x = map(i, 0, fft.length, 0, width);

        let w = width / fft.length;

        rect(x, height, w, -freq);

    }

​

}

​

/* AUDIO INIT */

let mic, fftRaw, fft = [],

    waveform = [],

    amp = 0.0,

    ampStereo = {

        l: 0.0,

        r: 0.0

    },

    numBins = 512,

    bands = 12;

​

function setupAudio() {

    userStartAudio();

    mic = new p5.AudioIn();

    mic.start();

    fftRaw = new p5.FFT(0.75, numBins);

    fftRaw.setInput(mic);

}

​

function updateAudio() {

    fftRaw.analyze();

    amp = mic.getLevel() * 1000; // average mixed amplitude

    ampStereo.l = mic.amplitude.getLevel(0) * 500; // average left amplitude

    ampStereo.r = mic.amplitude.getLevel(1) * 500; // average right amplitude

    waveform = fftRaw.waveform(); // array (-1, 1)

    fft = fftRaw.logAverages(fftRaw.getOctaveBands(bands)); // array (0, 255)

}