* @name Record Save Audio

 * @description Record a sound, play it back and save

 * it as a .wav file to the client's computer.

 * We need three objects: a p5.AudioIn (mic / sound source),

 * p5.SoundRecorder (records the sound), and a

 * p5.SoundFile (play back / save).

 * <p><em><span class="small"> To run this example locally, you will need the

 * <a href="http://p5js.org/reference/#/libraries/p5.sound">p5.sound library</a>

 * a sound file, and a running <a href="https://github.com/processing/p5.js/wiki/Local-server">local server</a>.</span></em></p>

 */

let mic, recorder, soundFile;

​

let state = 0; // mousePress will increment from Record, to Stop, to Play

​

function setup() {

  createCanvas(400, 400);

  background(200);

  fill(0);

  text('Enable mic and click the mouse to begin recording', 20, 20);

​

  // create an audio in

  mic = new p5.AudioIn();

  mic.getSources(gotSources);

  // users must manually enable their browser microphone for recording to work properly!

  mic.start();

​

  // create a sound recorder

  recorder = new p5.SoundRecorder();

​

  // connect the mic to the recorder

  recorder.setInput(mic);

​

  // create an empty sound file that we will use to playback the recording

  soundFile = new p5.SoundFile();

​

}

function gotSources(deviceList) {

  if (deviceList.length > 0) {

    //set the source to the first item in the deviceList array

    audioIn.setSource(0);

    let currentSource = deviceList[audioIn.currentSource];

    text('set source to: ' + currentSource.deviceId, 5, 20, width);

  }

}

​

function mousePressed() {

  // use the '.enabled' boolean to make sure user enabled the mic (otherwise we'd record silence)

  if (state === 0 /*&& mic.enabled*/) {

    // Tell recorder to record to a p5.SoundFile which we will use for playback

    recorder.record(soundFile);

​

    background(255, 0, 0);

    text('Recording now! Click to stop.', 20, 20);

    state++;

  } else if (state === 1) {

    recorder.stop(); // stop recorder, and send the result to soundFile

​

    background(0, 255, 0);

    text('Recording stopped. Click to play & save', 20, 20);

    state++;

    console.log(soundFile.isLoaded());

  } else if (state === 2) {

    soundFile.play(); // play the result!

    state = 0;

//    saveSound(soundFile, 'mySound.wav'); // save file

//    state++;

  }

}

​