Sarmad Gardezi

Sarmad Gardezi

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Source Code for Web Speech API in HTML5

The Voice Dictation app uses the Web Speech API to convert your spoken words into text. There’s a simple JavaScript API that lets you integrate Speech Recognition on any website.

The Web Speech API is currently implemented in Chrome and Firefox.


<div><a id="start_button" href="#">Dictate</a></div>
<div id="results"><span id="final_span" class="final"></span>
<span id="interim_span" class="interim"></span></div>
<script type="text/javascript">
var final_transcript = '';
var recognizing = false;

if ('webkitSpeechRecognition' in window) {

var recognition = new webkitSpeechRecognition();

recognition.continuous = true;
recognition.interimResults = true;

recognition.onstart = function() {
recognizing = true;
};

recognition.onerror = function(event) {
console.log(event.error);
};

recognition.onend = function() {
recognizing = false;
};

recognition.onresult = function(event) {
var interim_transcript = '';
for (var i = event.resultIndex; i < event.results.length; ++i) {
if (event.results[i].isFinal) {
final_transcript += event.results[i][0].transcript;
} else {
interim_transcript += event.results[i][0].transcript;
}
}
final_transcript = capitalize(final_transcript);
final_span.innerHTML = linebreak(final_transcript);
interim_span.innerHTML = linebreak(interim_transcript);

};
}

var two_line = /\n\n/g;
var one_line = /\n/g;
function linebreak(s) {
return s.replace(two_line, '</p>
<p>').replace(one_line, '<br>');
}

function capitalize(s) {
return s.replace(s.substr(0,1), function(m) { return m.toUpperCase(); });
}

function startDictation(event) {
if (recognizing) {
recognition.stop();
return;
}
final_transcript = '';
recognition.lang = 'en-US';
recognition.start();
final_span.innerHTML = '';
interim_span.innerHTML = '';
}
</script>



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