Create transcripts using webkitSpeechRecognition by attaching a mediaStream audioTrack

gistfile1.txt

var AudioTrackSpeechLog = (function () {
    "use strict";
    var ctor = function (track, completed, interim, lang) {
        var self = this;
        this.recognizing = false;
        this.finalTranscript = "";
        if (('webkitSpeechRecognition' in window)) {
            this.recognition = new webkitSpeechRecognition();
            this.recognition.continuous = true;
            this.recognition.interimResults = true;
            this.recognition.lang = lang || navigator.language;

            this.recognition.onstart = function() {
                console.log("staring");
            };

            this.recognition.onend = function () {
                console.log("ending");
              //  self.start();
            }; 



            this.recognition.onresult = function (event) {
              
                var interimTranscript = '';
                for (var i = event.resultIndex; i < event.results.length; ++i) {
                    if (event.results[i].isFinal) {
                        self.finalTranscript += event.results[i][0].transcript;
                        completed(event.results[i][0].transcript,
                            event.results[i][0].confidence,
                            self.trackId, new Date());
                    } else {
                        interimTranscript += event.results[i][0].transcript;
                        interim(interimTranscript,self.trackId, new Date());
                    }
                }
            };
            this.trackId = track.id;
        }
    };
    ctor.prototype.start = function () {
        this.recognition.start();
        this.recognizing = true;
        return this;
    };
    ctor.prototype.stop = function () {
        this.recognition.stop();
        this.recognizing = false;
        return this;
    };
    return ctor;
})();



// track is the mediaStram track

//i.e   track = stream.getAudioTracks()[0]

var audioLogger = new AudioTrackSpeechLog(track,
    function (completeText, confidence, trackId, ts) {
        // complete text is the final Result
    }, function (text, trackId, ts) {
        //  text is interim result
    }, "sv-SE"); // last arg optinal 
audioLogger.start();