Pitch Detection example doesn't work

Describe the bug A clear and concise description of what the bug is.

https://github.com/rserota/wad#pitch-detection

Doesn't work. Using it in a CRA app and it was printing undefined undefined.

Expected behavior A clear and concise description of what you expected to happen.

I would expect the note and pitch to get pritned.

To Reproduce Include the smallest possible code snippet that reproduces this bug.

import { useEffect } from "react";

import Wad from "web-audio-daw";

export default () => {
  useEffect(() => {
    const voice = new Wad({ source: "mic" }); // At this point, your browser will ask for permission to access your microphone.
    const tuner = new Wad.Poly();
    tuner.setVolume(0); // If you're not using headphones, you can eliminate microphone feedback by muting the output from the tuner.
    tuner.add(voice);

    voice.play(); // You must give your browser permission to access your microphone before calling play().

    tuner.updatePitch(); // The tuner is now calculating the pitch and note name of its input 60 times per second. These values are stored in <code>tuner.pitch</code> and <code>tuner.noteName</code>.

    const logPitch = function () {
      console.log(voice);
      console.log(tuner.pitch, tuner.noteName);
      requestAnimationFrame(logPitch);
    };
    logPitch();
  });

  return <div>Microphone</div>;
};

Screenshots If applicable, add screenshots to help explain your problem.

Device (please complete the following information):

Model: [e.g. iPhone6]
OS: [e.g. iOS8.1]
Browser [e.g. stock browser, safari]
Version [e.g. 22]

Additional context Add any other context about the problem here.

rserota / wad

Pitch Detection example doesn't work #151