Berikut adalah tutorial mengenai cara membuat aplikasi atau source code pengenal suara (speech recognition) barangkali anda pasti pernah menggunakannya di google. untuk melakukan instruksi kita tinggal berbicara kemudian google dengan mudahnya mengetik sendiri apa yang kita katakan. Nah. Dengan mudah dan dengan bantuan google sendiri kita juga dapat membuatnya pada aplikasi yang kita kembangkan. Misal kita ingin membuat suatu form yang didukung speech recognition dalam mengisinya. Nah, jika malas melakukan pengetikan, kita dapat menginputkannya dengan bersuara tanpa mengetik melalui keyboard. Baik langsung saja pada tutorial nya sebagai berikut :
Source code ini diperoleh dari ebidel dengan alamat github : https://github.com/googlearchive/webplatform-samples.
dan telah dimodifikasi ke pemilihan bahasa indonesia. Berikut adalah source code nya :
buatlah file index.html dengan kode sebagai berikut :
<!DOCTYPE html>
<meta charset="utf-8">
<title>Web Speech API Demo</title>
<style>
* {
font-family: Verdana, Arial, sans-serif;
}
a:link {
color:#000;
text-decoration: none;
}
a:visited {
color:#000;
}
a:hover {
color:#33F;
}
.button {
background: -webkit-linear-gradient(top,#008dfd 0,#0370ea 100%);
border: 1px solid #076bd2;
border-radius: 3px;
color: #fff;
display: none;
font-size: 13px;
font-weight: bold;
line-height: 1.3;
padding: 8px 25px;
text-align: center;
text-shadow: 1px 1px 1px #076bd2;
letter-spacing: normal;
}
.center {
padding: 10px;
text-align: center;
}
.final {
color: black;
padding-right: 3px;
}
.interim {
color: gray;
}
.info {
font-size: 14px;
text-align: center;
color: #777;
display: none;
}
.right {
float: right;
}
.sidebyside {
display: inline-block;
width: 45%;
min-height: 40px;
text-align: left;
vertical-align: top;
}
#headline {
font-size: 40px;
font-weight: 300;
}
#info {
font-size: 20px;
text-align: center;
color: #777;
visibility: hidden;
}
#results {
font-size: 14px;
font-weight: bold;
border: 1px solid #ddd;
padding: 15px;
text-align: left;
min-height: 150px;
}
#start_button {
border: 0;
background-color:transparent;
padding: 0;
}
</style>
<h1 class="center" id="headline">
<a href="http://dvcs.w3.org/hg/speech-api/raw-file/tip/speechapi.html">
Web Speech API</a> Demonstration</h1>
<div id="info">
<p id="info_start">Klik pada mikrofon untuk mulai berbicara</p>
<p id="info_speak_now">Bicara Sekarang.</p>
<p id="info_no_speech">Tidak ada speech terdeteksi.
<a href="//support.google.com/chrome/bin/answer.py?hl=en&answer=1407892">
Klik Disini Untuk Melihat Bantuan</a>.</p>
<p id="info_no_microphone" style="display:none">
No microphone was found. Ensure that a microphone is installed and that
<a href="//support.google.com/chrome/bin/answer.py?hl=en&answer=1407892">
microphone settings</a> are configured correctly.</p>
<p id="info_allow">Click the "Allow" button above to enable your microphone.</p>
<p id="info_denied">Permission to use microphone was denied.</p>
<p id="info_blocked">Permission to use microphone is blocked. To change,
go to chrome://settings/contentExceptions#media-stream</p>
<p id="info_upgrade">Web Speech API is not supported by this browser.
Upgrade to <a href="//www.google.com/chrome">Chrome</a>
version 25 or later.</p>
</div>
<div class="right">
<button id="start_button" onclick="startButton(event)">
<img id="start_img" src="mic.gif" alt="Start"></button>
</div>
<div id="results">
<span id="final_span" class="final"></span>
<span id="interim_span" class="interim"></span>
<p>
</div>
<div class="center">
<div class="sidebyside" style="text-align:right">
<button id="copy_button" class="button" onclick="copyButton()">
Copy and Paste</button>
<div id="copy_info" class="info">
Press Control-C to copy text.<br>(Command-C on Mac.)
</div>
</div>
<!--<div class="sidebyside">
<button id="email_button" class="button" onclick="emailButton()">
Create Email</button>
<div id="email_info" class="info">
Text sent to default email application.<br>
(See chrome://settings/handlers to change.)
</div>
</div>-->
<p>
<div id="div_language">
<select id="select_language" onchange="updateCountry()"></select>
<select id="select_dialect"></select>
</div>
</div>
<script>
var langs =
[['Afrikaans', ['af-ZA']],
['Bahasa Indonesia',['id-ID']],
['Bahasa Melayu', ['ms-MY']],
['Català', ['ca-ES']],
['Čeština', ['cs-CZ']],
['Deutsch', ['de-DE']],
['English', ['en-AU', 'Australia'],
['en-CA', 'Canada'],
['en-IN', 'India'],
['en-NZ', 'New Zealand'],
['en-ZA', 'South Africa'],
['en-GB', 'United Kingdom'],
['en-US', 'United States']],
['Español', ['es-AR', 'Argentina'],
['es-BO', 'Bolivia'],
['es-CL', 'Chile'],
['es-CO', 'Colombia'],
['es-CR', 'Costa Rica'],
['es-EC', 'Ecuador'],
['es-SV', 'El Salvador'],
['es-ES', 'España'],
['es-US', 'Estados Unidos'],
['es-GT', 'Guatemala'],
['es-HN', 'Honduras'],
['es-MX', 'México'],
['es-NI', 'Nicaragua'],
['es-PA', 'Panamá'],
['es-PY', 'Paraguay'],
['es-PE', 'Perú'],
['es-PR', 'Puerto Rico'],
['es-DO', 'República Dominicana'],
['es-UY', 'Uruguay'],
['es-VE', 'Venezuela']],
['Euskara', ['eu-ES']],
['Français', ['fr-FR']],
['Galego', ['gl-ES']],
['Hrvatski', ['hr_HR']],
['IsiZulu', ['zu-ZA']],
['Íslenska', ['is-IS']],
['Italiano', ['it-IT', 'Italia'],
['it-CH', 'Svizzera']],
['Magyar', ['hu-HU']],
['Nederlands', ['nl-NL']],
['Norsk bokmål', ['nb-NO']],
['Polski', ['pl-PL']],
['Português', ['pt-BR', 'Brasil'],
['pt-PT', 'Portugal']],
['Română', ['ro-RO']],
['Slovenčina', ['sk-SK']],
['Suomi', ['fi-FI']],
['Svenska', ['sv-SE']],
['Türkçe', ['tr-TR']],
['български', ['bg-BG']],
['Pусский', ['ru-RU']],
['Српски', ['sr-RS']],
['한국어', ['ko-KR']],
['中文', ['cmn-Hans-CN', '普通话 (中国大陆)'],
['cmn-Hans-HK', '普通话 (香港)'],
['cmn-Hant-TW', '中文 (台灣)'],
['yue-Hant-HK', '粵語 (香港)']],
['日本語', ['ja-JP']],
['Lingua latīna', ['la']]];
for (var i = 0; i < langs.length; i++) {
select_language.options[i] = new Option(langs[i][0], i);
}
select_language.selectedIndex = 1;
updateCountry();
select_dialect.selectedIndex = 1;
showInfo('info_start');
function updateCountry() {
for (var i = select_dialect.options.length - 1; i >= 0; i--) {
select_dialect.remove(i);
}
var list = langs[select_language.selectedIndex];
for (var i = 1; i < list.length; i++) {
select_dialect.options.add(new Option(list[i][1], list[i][0]));
}
select_dialect.style.visibility = list[1].length == 1 ? 'hidden' : 'visible';
}
var create_email = false;
var final_transcript = '';
var recognizing = false;
var ignore_onend;
var start_timestamp;
if (!('webkitSpeechRecognition' in window)) {
upgrade();
} else {
start_button.style.display = 'inline-block';
var recognition = new webkitSpeechRecognition();
recognition.continuous = true;
recognition.interimResults = true;
recognition.onstart = function() {
recognizing = true;
showInfo('info_speak_now');
start_img.src = 'mic-animate.gif';
};
recognition.onerror = function(event) {
if (event.error == 'no-speech') {
start_img.src = 'mic.gif';
showInfo('info_no_speech');
ignore_onend = true;
}
if (event.error == 'audio-capture') {
start_img.src = 'mic.gif';
showInfo('info_no_microphone');
ignore_onend = true;
}
if (event.error == 'not-allowed') {
if (event.timeStamp - start_timestamp < 100) {
showInfo('info_blocked');
} else {
showInfo('info_denied');
}
ignore_onend = true;
}
};
recognition.onend = function() {
recognizing = false;
if (ignore_onend) {
return;
}
start_img.src = 'mic.gif';
if (!final_transcript) {
showInfo('info_start');
return;
}
showInfo('');
if (window.getSelection) {
window.getSelection().removeAllRanges();
var range = document.createRange();
range.selectNode(document.getElementById('final_span'));
window.getSelection().addRange(range);
}
if (create_email) {
create_email = false;
createEmail();
}
};
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);
if (final_transcript || interim_transcript) {
showButtons('inline-block');
}
};
}
function upgrade() {
start_button.style.visibility = 'hidden';
showInfo('info_upgrade');
}
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>');
}
var first_char = /\S/;
function capitalize(s) {
return s.replace(first_char, function(m) { return m.toUpperCase(); });
}
function createEmail() {
var n = final_transcript.indexOf('\n');
if (n < 0 || n >= 80) {
n = 40 + final_transcript.substring(40).indexOf(' ');
}
var subject = encodeURI(final_transcript.substring(0, n));
var body = encodeURI(final_transcript.substring(n + 1));
window.location.href = 'mailto:?subject=' + subject + '&body=' + body;
}
function copyButton() {
if (recognizing) {
recognizing = false;
recognition.stop();
}
copy_button.style.display = 'none';
copy_info.style.display = 'inline-block';
showInfo('');
}
function emailButton() {
if (recognizing) {
create_email = true;
recognizing = false;
recognition.stop();
} else {
createEmail();
}
email_button.style.display = 'none';
email_info.style.display = 'inline-block';
showInfo('');
}
function startButton(event) {
if (recognizing) {
recognition.stop();
return;
}
final_transcript = '';
recognition.lang = select_dialect.value;
recognition.start();
ignore_onend = false;
final_span.innerHTML = '';
interim_span.innerHTML = '';
start_img.src = 'mic-slash.gif';
showInfo('info_allow');
showButtons('none');
start_timestamp = event.timeStamp;
}
function showInfo(s) {
if (s) {
for (var child = info.firstChild; child; child = child.nextSibling) {
if (child.style) {
child.style.display = child.id == s ? 'inline' : 'none';
}
}
info.style.visibility = 'visible';
} else {
info.style.visibility = 'hidden';
}
}
var current_style;
function showButtons(style) {
if (style == current_style) {
return;
}
current_style = style;
copy_button.style.display = style;
email_button.style.display = style;
copy_info.style.display = 'none';
email_info.style.display = 'none';
}
</script>
Demikianlah source code membuat aplikasi speech recognition. Silahkan download source code di link di bawah ini :
