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HTML

              
                <h1 class="well text-center well-sm">Voice-Controlled Audio Player</h1>

<div class="col-md-12 context">
  <p class="big">Contextual</p>
  <p> Last Command: <span class="l-command"></span></p>
  <p>Status: <span class="status"></span> </p>
</div>

<div class="col-md-5">
  <p class="big text-center"><span class="glyphicon glyphicon-info-sign"></span> Available Commands:</p>
  <ul class="list-group">
    <li class="list-group-item list-group-item-success"><strong>Play</strong> - Plays the current song or starts the first song.</li>
    <li class="list-group-item list-group-item-success"><strong>Stop</strong> - Stops the the current song and nullifies the playback time.</li>
    <li class="list-group-item list-group-item-success"><strong>Pause</strong> - Pauses the current song.</li>
    <li class="list-group-item list-group-item-success"><strong>Next</strong> Plays the next song in the list.</li>
    <li class="list-group-item list-group-item-success"><strong>Previous</strong> - Plays the previous song in the list. </li>
    <li class="list-group-item list-group-item-success"><strong>Play &lt;slice from song's or singer's name&gt;</strong> - Plays a song with a particular name, if found.</li>
    <li class="list-group-item list-group-item-warning">The songs are taken from <a href="http://freemusicarchive.org/" target="_blank">http://freemusicarchive.org/</a> and the spinner icon from
      <a target="_blank" href="http://www.wikimedia.org">Wikimedia</a></li>
  </ul>
</div>

<div class="col-md-6">
  <p class="lead text-center">We offer you the following amazing songs:</p>
  <ul class="list-group" id="playlist"></ul>
</div>

<div id="spinner">
  <img src="http://upload.wikimedia.org/wikipedia/commons/d/de/Ajax-loader.gif" alt="Loading">
</div>
              
            
!

CSS

              
                #spinner {
  display: none;
  position: fixed;
  z-index: 111;
  left: 50%;
  top: 80%;
}

.glyphicon-headphones {
  color: crimson;
  font-size: 1.3em;
  margin-left: 5px;
}

.big {
  font-size: 1.5em;
  font-weight: bolder;
}

.context{
  margin-bottom: 10px;
}
              
            
!

JS

              
                var data = {
  "songs": [
    {
      "fileName": "https://www.ruse-problem.org/songs/RunningWaters.mp3",
      "singer": "Jason Shaw",
      "songName": "Running Waters"
    },
    {
      "fileName": "https://www.ruse-problem.org/songs/Enthusiast.mp3",
      "singer": "Tours",
      "songName": "Enthusiast"
    },
    {
      "fileName": "https://www.ruse-problem.org/songs/SkyRide.mp3",
      "singer": "Itasca",
      "songName": "Sky Ride"
    },
    {
      "fileName": "https://www.ruse-problem.org/songs/Starling.mp3",
      "singer": "Podington Bear",
      "songName": "Starling"
    },
    {
      "fileName": "https://www.ruse-problem.org/songs/HachikoTheFaithtfulDog.mp3",
      "singer": "The Kyoto Connection",
      "songName": "Hachiko The Faithful Dog"
    },
    {
      "fileName": "https://www.ruse-problem.org/songs/FaterLee.mp3",
      "singer": "Black Ant",
      "songName": "Father Lee"
    },
    {
      "fileName": "https://www.ruse-problem.org/songs/EpicSong.mp3",
      "singer": "BoxCat Games",
      "songName": "Epic Song"
    }
  ]
};

var audioPlayer = {
  audioData: {
    currentSong: -1,
    songs: []
  },

  // UI
  load: function() {
    this.data = data.songs;
    data.songs.forEach(function(val, i) {
      $("#playlist").append(
        "<li class='list-group-item'>" + val.singer + " - " + val.songName
      );
    })
  },
  changeCurrentSongEffect: function(options) {
    if (options.play) {
      $("#playlist .list-group-item")
        .removeClass("list-group-item-success").find("span").remove();
      $("#playlist .list-group-item")
        .eq(this.audioData.currentSong)
        .addClass("list-group-item-success")
        .removeClass("list-group-item-danger")
        .append("<span class='glyphicon glyphicon-headphones'>");
    }
    if (options.end) {
      $("#playlist .list-group-item")
      .eq(this.audioData.currentSong)
      .removeClass("list-group-item-success glyphicon-headphones")
      .addClass("list-group-item-danger");
    }
  },
  playSong: function(audio) {
    this.changeCurrentSongEffect({
      play: 1
    });
    audio.onended = function() {
      audioPlayer.changeCurrentSongEffect({
        end: 1
      });
      audioPlayer.changeStatusCode("Finished listening to", true);
    }
    this.changeStatusCode("Playing", true, audio);
  },
  changeStatusCode: function(statusMessage, addSongName, scope) {
    if (addSongName) {
      statusMessage += " " + $("#playlist .list-group-item").eq(this.audioData.currentSong).text();
    }
    this.speak(statusMessage, scope);
    $(".status")
    .fadeOut("slow")
    .html(statusMessage)
    .fadeIn("slow");
  },
  changeLastCommand: function(cmd) {
    $(".l-command").fadeOut("slow")
    .text(cmd)
    .fadeIn("slow");
  },
  toggleSpinner: function(show) {
    (show || false) ? $("#spinner").fadeIn(900) : $("#spinner").fadeOut(1200);
  },

  // Audio Player
  play: function() {
    var currentSong = this.audioData.currentSong;
    if (currentSong === -1) {
      this.audioData.currentSong = ++currentSong;
      this.audioData.songs[this.audioData.currentSong] = new Audio(
        this.data[0].fileName);
      this.playSong(this.audioData.songs[currentSong]);

    } else {
      this.playSong(this.audioData.songs[currentSong]);
    }
  },
  pauseSong: function(audio, stopPlayback) {
    if (audio.paused) {
      return;
    }
    audio.pause();
    if (stopPlayback) {
      this.changeStatusCode("Stopped", true);
      audio.currentTime = 0;
      return;
    }
    this.changeStatusCode("Paused", true);
  },
  stop: function(stopPlayback) {
    this.pauseSong(this.audioData.songs[this.audioData.currentSong], stopPlayback || false);
    if (stopPlayback) {
      this.audioData.songs[this.audioData.currentSong].currentTime = 0;
    }
  },
  prev: function() {
    var currentSong = this.audioData.currentSong;
    if (typeof this.audioData.songs[currentSong - 1] !== 'undefined') {
      this.pauseSong(this.audioData.songs[currentSong]);
      this.audioData.currentSong = --currentSong;
      this.playSong(this.audioData.songs[currentSong]);

    } else if (currentSong > 0) {
      this.pauseSong(this.audioData.songs[currentSong]);
      this.audioData.currentSong = currentSong = --currentSong;
      this.audioData.songs[this.audioData.currentSong] = new Audio(
        this.data[currentSong].fileName);
      this.playSong(this.audioData.songs[currentSong]);
    } else {
      this.changeStatusCode("There are no previous songs.");
    }
  },
  next: function() {
    var currentSong = this.audioData.currentSong;
    if (currentSong > -1) {
      this.pauseSong(this.audioData.songs[currentSong]);
    }
    if (typeof this.data[currentSong + 1] !== 'undefined') {
      currentSong = ++this.audioData.currentSong;
      this.audioData.songs[this.audioData.currentSong] = new Audio(this.data[currentSong].fileName);
      this.playSong(this.audioData.songs[currentSong]);
    } else {
      this.changeStatusCode("You have reached the final song.");
    }
  },
  searchSpecificSong: function(keyword) {
    try {
      this.data.forEach(function(val, i) {
        if (val.songName.trim().toLowerCase().indexOf(keyword) !== -1 ||
            val.singer.trim().toLowerCase().indexOf(keyword) !== -1) {
          if (typeof this.audioData.songs[i] !== 'undefined') {
            //if the song is already cached
            if (this.audioData.currentSong > -1) {
              this.pauseSong(this.audioData.songs[this.audioData.currentSong]);
            }
            this.audioData.currentSong = i;
            audioPlayer.playSong(audioPlayer.audioData.songs[i]);
            throw LoopBreakException;
          } else {
            //add the song and play it
            if (this.audioData.currentSong > -1) {
              this.pauseSong(this.audioData.songs[this.audioData.currentSong]);
            }
            this.audioData.currentSong = i;
            this.audioData.songs[i] = new Audio(this.data[i].fileName);
            this.playSong(this.audioData.songs[i]);
            throw LoopBreakException;
          }
        }
      }, audioPlayer);
    } catch (e) {
      return e;
    }
  },

  // Speech API
  speak: function(text, scope) {
    var message = new SpeechSynthesisUtterance(text.replace("-", " "));
    message.rate = 1;
    window.speechSynthesis.speak(message);
    if (scope) {
      message.onend = function() {
        scope.play();
      }
    }
  },
  processCommands: function(cmd) {
    this.changeLastCommand(cmd);
    var playSpecific = cmd.match(/play\s*(.+)$/);
    if (playSpecific) {
      this.searchSpecificSong(playSpecific[1]);
      return;
    }
    switch (cmd) {
      case "play":
        this.play();
        break;
      case 'pause':
        this.stop();
        break;
      case "stop":
        this.stop(true);
        break;
      case "next":
        this.next();
        break;
      case "previous":
        this.prev();
        break;
      default:
        this.speak("Your command was invalid!", false);
    }
  },
}

$(function() {
  audioPlayer.load();
  if (window['webkitSpeechRecognition']) {
    var speechRecognizer = new webkitSpeechRecognition();
    // recognition will not end when user stops speaking if set to true
    speechRecognizer.continuous = true;
    // process the request while the user is speaking
    // and their commands are final. Set to false by default
    speechRecognizer.interimResults = true;
    speechRecognizer.lang = "en-US";
    var currentCommands = ['play', 'stop', 'pause', 'next', 'previous'],
        results = [],
        timeoutSet = false;

    speechRecognizer.onresult = function (evt) {
      audioPlayer.toggleSpinner(true);
      results.push(evt.results);
      if (!timeoutSet) {
        setTimeout(function() {
          timeoutSet = false;
          results.reverse();
          try {
            results.forEach(function (val, i) {
              var el = val[0][0].transcript.toLowerCase();
              if (currentCommands.indexOf(el.split(" ")[0]) !== -1) {
                speechRecognizer.abort();
                audioPlayer.processCommands(el);
                audioPlayer.toggleSpinner();
                results = [];
                throw new BreakLoopException;
              }
              if (i === 0) {
                audioPlayer.processCommands(el);
                speechRecognizer.abort();
                audioPlayer.toggleSpinner();
                results = [];
              }
            });
          }
          catch(e) {return e;}
        }, 3000)
      }
      timeoutSet = true;
    }
    speechRecognizer.onend = function () {
      speechRecognizer.start();
    }
    speechRecognizer.start();
  }
  else {
    alert("Your browser does not support the Web Speech API");
  }
});

              
            
!
999px

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