本文介绍了如何在Chrome上使用Web Speech API？的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！
问题描述
如何在铬浏览器中使用 SpeechSynthesisUtterance（）和 window.speechSynthesis.speak（）？
How to use SpeechSynthesisUtterance() and window.speechSynthesis.speak() at chromium browser?
var msg = new SpeechSynthesisUtterance( "Hello I am browser" );
window.speechSynthesis.speak( msg );
系统扬声器没有输出。
yields no output at system speakers.
已经注意到API的问题;
Issues with the API have bee noted The HTML5 SpeechSynthesis API is rubbish;
var voices = window.speechSynthesis.getVoices();
为语音记录一个空数组标识符;并且只有chrome而不是chrome据称支持，设置<$的值c $ c> html 在页面启用麦克风时，演示到发声的元素。
logs an empty array for voices identifier; and only chrome not chromium purportedly support Web Speech API Specification, the Web Speech API Demonstration sets value of html element at demonstration to utterance voiced when microphone is enabled at page.
至少一些与功能相关的JavaScript显然
At least some of the JavaScript relating to the functionality is apparently
var langs =
[['Afrikaans', ['af-ZA']],
['Bahasa Indonesia',['id-ID']],
['Bahasa Melayu', ['ms-MY']],
['Català', ['ca-ES']],
['Čeština', ['cs-CZ']],
['Dansk', ['da-DK']],
['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']],
['Filipino', ['fil-PH']],
['Français', ['fr-FR']],
['Galego', ['gl-ES']],
['Hrvatski', ['hr_HR']],
['IsiZulu', ['zu-ZA']],
['Íslenska', ['is-IS']],
['Italiano', ['it-IT', 'Italia'],
['it-CH', 'Svizzera']],
['Lietuvių', ['lt-LT']],
['Magyar', ['hu-HU']],
['Nederlands', ['nl-NL']],
['Norsk bokmål', ['nb-NO']],
['Polski', ['pl-PL']],
['Português', ['pt-BR', 'Brasil'],
['pt-PT', 'Portugal']],
['Română', ['ro-RO']],
['Slovenščina', ['sl-SI']],
['Slovenčina', ['sk-SK']],
['Suomi', ['fi-FI']],
['Svenska', ['sv-SE']],
['Tiếng Việt', ['vi-VN']],
['Türkçe', ['tr-TR']],
['Ελληνικά', ['el-GR']],
['български', ['bg-BG']],
['Pусский', ['ru-RU']],
['Српски', ['sr-RS']],
['Українська', ['uk-UA']],
['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']],
['हिन्दी', ['hi-IN']],
['ภาษาไทย', ['th-TH']]];
for (var i = 0; i < langs.length; i++) {
select_language.options[i] = new Option(langs[i][0], i);
}
select_language.selectedIndex = 7;
updateCountry();
select_dialect.selectedIndex = 6;
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 = '/intl/en/chrome/assets/common/images/content/mic-animate.gif';
};
recognition.onerror = function(event) {
if (event.error == 'no-speech') {
start_img.src = '/intl/en/chrome/assets/common/images/content/mic.gif';
showInfo('info_no_speech');
ignore_onend = true;
}
if (event.error == 'audio-capture') {
start_img.src = '/intl/en/chrome/assets/common/images/content/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 = '/intl/en/chrome/assets/common/images/content/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 = '';
if (typeof(event.results) == 'undefined') {
recognition.onend = null;
recognition.stop();
upgrade();
return;
}
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 = '/intl/en/chrome/assets/common/images/content/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';
}
归因于该文档的作者。
attributed to authors of the document.
虽然不确定这会如何影响 SpeechSynthesisUtterance（）的使用和 window.speechSynthesis .speak（）？
Though not certain how this affects the usage of SpeechSynthesisUtterance() and window.speechSynthesis.speak()?
如何加载语音来填充 window.speechSynthesis.getVoices（）？
链接的演示文档如何实现将语音转换为文本的功能？
How does the linked demonstration document implement the functionality to transcribe voice to text?
什么是在Chrome浏览器上使用Web Speech API所需的变通方法吗？
What are the workarounds necessary to use the Web Speech API at chromium browser?
具体来说，如何将语音转录为文本并将文本转换为音频输出？
Specifically, how to transcribe voice to text and convert text to audio output?
推荐答案
使用包管理器安装
Install espeak using package manager
$ sudo apt-get install espeak
使用 flag
Launch Chromium with --enable-speech-dispatcher flag
$ chromium-browser --enable-speech-dispatcher
这篇关于如何在Chrome上使用Web Speech API？的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持！