Javascript 长文本Chrome语音合成
我在Chrome33中尝试使用语音合成API时遇到了一个问题。它与更短的文本完美地结合在一起，但是如果我尝试更长的文本，它只会在中间停止。当它像那样停止一次之后，语音合成在浏览器重新启动之前不会在Chrome中的任何地方工作 示例代码（）： 它在第二个文本的中间停止说话，之后我再也找不到其他的页面。Javascript 长文本Chrome语音合成,javascript,google-chrome,speech-synthesis,Javascript,Google Chrome,Speech Synthesis,我在Chrome33中尝试使用语音合成API时遇到了一个问题。它与更短的文本完美地结合在一起，但是如果我尝试更长的文本，它只会在中间停止。当它像那样停止一次之后，语音合成在浏览器重新启动之前不会在Chrome中的任何地方工作 示例代码（）： 它在第二个文本的中间停止说话，之后我再也找不到其他的页面。 这是一个浏览器错误还是某种安全限制？我在谷歌Chrome语音合成中遇到这个问题已经有一段时间了。经过一番调查，我发现： 只有当声音不是本地声音时，才会出现说话中断 剪切通常发生在200-300个字
这是一个浏览器错误还是某种安全限制？我在谷歌Chrome语音合成中遇到这个问题已经有一段时间了。经过一番调查，我发现：
- 只有当声音不是本地声音时，才会出现说话中断
- 剪切通常发生在200-300个字符之间
- 当它确实中断时，您可以通过执行
speechSynthesis.cancel（）取消冻结它 - “onend”事件有时决定不开火。解决这个问题的一个奇怪的方法是在说话之前先控制台.log（）输出话语对象。我还发现在setTimeout回调中包装speak调用有助于解决这些问题
var speechUtteranceChunker = function (utt, settings, callback) {
settings = settings || {};
var newUtt;
var txt = (settings && settings.offset !== undefined ? utt.text.substring(settings.offset) : utt.text);
if (utt.voice && utt.voice.voiceURI === 'native') { // Not part of the spec
newUtt = utt;
newUtt.text = txt;
newUtt.addEventListener('end', function () {
if (speechUtteranceChunker.cancel) {
speechUtteranceChunker.cancel = false;
}
if (callback !== undefined) {
callback();
}
});
}
else {
var chunkLength = (settings && settings.chunkLength) || 160;
var pattRegex = new RegExp('^[\\s\\S]{' + Math.floor(chunkLength / 2) + ',' + chunkLength + '}[.!?,]{1}|^[\\s\\S]{1,' + chunkLength + '}$|^[\\s\\S]{1,' + chunkLength + '} ');
var chunkArr = txt.match(pattRegex);
if (chunkArr[0] === undefined || chunkArr[0].length <= 2) {
//call once all text has been spoken...
if (callback !== undefined) {
callback();
}
return;
}
var chunk = chunkArr[0];
newUtt = new SpeechSynthesisUtterance(chunk);
var x;
for (x in utt) {
if (utt.hasOwnProperty(x) && x !== 'text') {
newUtt[x] = utt[x];
}
}
newUtt.addEventListener('end', function () {
if (speechUtteranceChunker.cancel) {
speechUtteranceChunker.cancel = false;
return;
}
settings.offset = settings.offset || 0;
settings.offset += chunk.length - 1;
speechUtteranceChunker(utt, settings, callback);
});
}
if (settings.modifier) {
settings.modifier(newUtt);
}
console.log(newUtt); //IMPORTANT!! Do not remove: Logging the object out fixes some onend firing issues.
//placing the speak invocation inside a callback fixes ordering and onend issues.
setTimeout(function () {
speechSynthesis.speak(newUtt);
}, 0);
};
希望大家会觉得这很有用。这是我的结论，它只是简单地把我的句子按句号分开。”
var voices=window.speechSynthesis.getVoices（）；
var sayit=函数（）
{
var msg=newspeechsynthesisutterance（）；
msg.voice=voices[10]；//注意：有些声音不支持更改参数
msg.voiceURI='native'；
msg.volume=1；//0到1
msg.rate=1；//0.1到10
msg.pitch=2；//0到2
msg.lang='en GB'；
msg.onstart=函数（事件）{
console.log（“启动”）；
};
msg.onend=函数（事件）{
log（'在'+event.elapsedTime+'秒'内完成'）；
};
msg.onerror=函数（事件）
{
console.log（'Errored'+事件）；
}
msg.onpause=函数（事件）
{
console.log（'暂停'+事件）；
}
msg.onboundary=函数（事件）
{
console.log（'onboundary'+事件）；
}
返回味精；
}
var speekResponse=函数（文本）
{
speechSynthesis.cancel（）；//如果出现错误，则清除错误。
变量句子=text.split（“.”）；
for（var i=0；i<句长；i++）
{
var toSay=sayit（）；
toSay.text=句子[i]；
演讲综合。演讲（托萨伊）；
}
}
你可以在：现场看到，Peter的答案的问题是，当你设置了语音合成队列时，它不起作用。该脚本将把新块放在队列的末尾，从而导致无序。例如：
u=新的演讲稿（）；
$（文档）.ready（函数（）{
$（'.t'）。每个（函数（）{
u=新的演讲合成语（$（this.text（））；
演讲人（美国）{
长度：120
}，函数（）{
console.log（'end'）；
});
});
});
/**
*Chunkify
*Google Chrome语音合成分块模式
*修复了在SpeechAcutrance对象中说长文本时的不一致
*根据麻省理工学院许可证获得许可
*
*彼得·伍利和布雷特·扎米尔
*/
var speechutrancechunker=函数（utt、设置、回调）{
设置=设置| |{}；
var newUtt；
var txt=（settings&&settings.offset！==未定义的？utt.text.substring（settings.offset）：utt.text）；
如果（utt.voice&&utt.voice.voiceURI==='native'）{//不属于规范的一部分
newUtt=utt；
newUtt.text=txt；
newUtt.addEventListener（'end'，函数（）{
if（speechoutancechunker.cancel）{
speechutrancechunker.cancel=false；
}
如果（回调！==未定义）{
回调（）；
}
});
}
否则{
var chunkLength=（settings&&settings.chunkLength）| 160；
var pattRegex=new RegExp（'^[\\s\\s]{'+Math.floor（chunkLength/2）+'，'+chunkLength+'}[.！？，]{1}|s]{1'+chunkLength+'}$|^[\\s\\s]{1'+chunkLength+'}）；
var chunkArr=txt.match（pattRegex）；
如果（chunkArr[0]==undefined | | chunkArr[0].length正如Michael所建议的，Peter的解决方案真的很棒，除非你的文本在不同的行上。Michael创建了演示来更好地说明问题。-并提出了另一个解决方案
在Peter的解决方案中，添加一种可能更简单的解决方法，即从textarea中删除换行符，效果非常好
//javascript
var noLineBreaks=document.getElementById（'mytextarea'）。replace（/\n/g'）；
//jquery
var noLineBreaks=$（'#mytextarea'）.val（）.replace（/\n/g'，）；var speechUtteranceChunker = function (utt, settings, callback) {
settings = settings || {};
var newUtt;
var txt = (settings && settings.offset !== undefined ? utt.text.substring(settings.offset) : utt.text);
if (utt.voice && utt.voice.voiceURI === 'native') { // Not part of the spec
newUtt = utt;
newUtt.text = txt;
newUtt.addEventListener('end', function () {
if (speechUtteranceChunker.cancel) {
speechUtteranceChunker.cancel = false;
}
if (callback !== undefined) {
callback();
}
});
}
else {
var chunkLength = (settings && settings.chunkLength) || 160;
var pattRegex = new RegExp('^[\\s\\S]{' + Math.floor(chunkLength / 2) + ',' + chunkLength + '}[.!?,]{1}|^[\\s\\S]{1,' + chunkLength + '}$|^[\\s\\S]{1,' + chunkLength + '} ');
var chunkArr = txt.match(pattRegex);
if (chunkArr[0] === undefined || chunkArr[0].length <= 2) {
//call once all text has been spoken...
if (callback !== undefined) {
callback();
}
return;
}
var chunk = chunkArr[0];
newUtt = new SpeechSynthesisUtterance(chunk);
var x;
for (x in utt) {
if (utt.hasOwnProperty(x) && x !== 'text') {
newUtt[x] = utt[x];
}
}
newUtt.addEventListener('end', function () {
if (speechUtteranceChunker.cancel) {
speechUtteranceChunker.cancel = false;
return;
}
settings.offset = settings.offset || 0;
settings.offset += chunk.length - 1;
speechUtteranceChunker(utt, settings, callback);
});
}
if (settings.modifier) {
settings.modifier(newUtt);
}
console.log(newUtt); //IMPORTANT!! Do not remove: Logging the object out fixes some onend firing issues.
//placing the speak invocation inside a callback fixes ordering and onend issues.
setTimeout(function () {
speechSynthesis.speak(newUtt);
}, 0);
};
//create an utterance as you normally would...
var myLongText = "This is some long text, oh my goodness look how long I'm getting, wooooohooo!";
var utterance = new SpeechSynthesisUtterance(myLongText);
//modify it as you normally would
var voiceArr = speechSynthesis.getVoices();
utterance.voice = voiceArr[2];
//pass it into the chunking function to have it played out.
//you can set the max number of characters by changing the chunkLength property below.
//a callback function can also be added that will fire once the entire text has been spoken.
speechUtteranceChunker(utterance, {
chunkLength: 120
}, function () {
//some code to execute when done
console.log('done');
});
var voices = window.speechSynthesis.getVoices();
var sayit = function ()
{
var msg = new SpeechSynthesisUtterance();
msg.voice = voices[10]; // Note: some voices don't support altering params
msg.voiceURI = 'native';
msg.volume = 1; // 0 to 1
msg.rate = 1; // 0.1 to 10
msg.pitch = 2; //0 to 2
msg.lang = 'en-GB';
msg.onstart = function (event) {
console.log("started");
};
msg.onend = function(event) {
console.log('Finished in ' + event.elapsedTime + ' seconds.');
};
msg.onerror = function(event)
{
console.log('Errored ' + event);
}
msg.onpause = function (event)
{
console.log('paused ' + event);
}
msg.onboundary = function (event)
{
console.log('onboundary ' + event);
}
return msg;
}
var speekResponse = function (text)
{
speechSynthesis.cancel(); // if it errors, this clears out the error.
var sentences = text.split(".");
for (var i=0;i< sentences.length;i++)
{
var toSay = sayit();
toSay.text = sentences[i];
speechSynthesis.speak(toSay);
}
}
<script type='text/javascript' src='http://code.jquery.com/jquery-2.1.0.js'></script>
<script type='text/javascript'>
u = new SpeechSynthesisUtterance();
$(document).ready(function () {
$('.t').each(function () {
u = new SpeechSynthesisUtterance($(this).text());
speechUtteranceChunker(u, {
chunkLength: 120
}, function () {
console.log('end');
});
});
});
/**
* Chunkify
* Google Chrome Speech Synthesis Chunking Pattern
* Fixes inconsistencies with speaking long texts in speechUtterance objects
* Licensed under the MIT License
*
* Peter Woolley and Brett Zamir
*/
var speechUtteranceChunker = function (utt, settings, callback) {
settings = settings || {};
var newUtt;
var txt = (settings && settings.offset !== undefined ? utt.text.substring(settings.offset) : utt.text);
if (utt.voice && utt.voice.voiceURI === 'native') { // Not part of the spec
newUtt = utt;
newUtt.text = txt;
newUtt.addEventListener('end', function () {
if (speechUtteranceChunker.cancel) {
speechUtteranceChunker.cancel = false;
}
if (callback !== undefined) {
callback();
}
});
}
else {
var chunkLength = (settings && settings.chunkLength) || 160;
var pattRegex = new RegExp('^[\\s\\S]{' + Math.floor(chunkLength / 2) + ',' + chunkLength + '}[.!?,]{1}|^[\\s\\S]{1,' + chunkLength + '}$|^[\\s\\S]{1,' + chunkLength + '} ');
var chunkArr = txt.match(pattRegex);
if (chunkArr[0] === undefined || chunkArr[0].length <= 2) {
//call once all text has been spoken...
if (callback !== undefined) {
callback();
}
return;
}
var chunk = chunkArr[0];
newUtt = new SpeechSynthesisUtterance(chunk);
var x;
for (x in utt) {
if (utt.hasOwnProperty(x) && x !== 'text') {
newUtt[x] = utt[x];
}
}
newUtt.addEventListener('end', function () {
if (speechUtteranceChunker.cancel) {
speechUtteranceChunker.cancel = false;
return;
}
settings.offset = settings.offset || 0;
settings.offset += chunk.length - 1;
speechUtteranceChunker(utt, settings, callback);
});
}
if (settings.modifier) {
settings.modifier(newUtt);
}
console.log(newUtt); //IMPORTANT!! Do not remove: Logging the object out fixes some onend firing issues.
//placing the speak invocation inside a callback fixes ordering and onend issues.
setTimeout(function () {
speechSynthesis.speak(newUtt);
}, 0);
};
</script>
<p class="t">MLA format follows the author-page method of in-text citation. This means that the author's last name and the page number(s) from which the quotation or paraphrase is taken must appear in the text, and a complete reference should appear on your Works Cited page. The author's name may appear either in the sentence itself or in parentheses following the quotation or paraphrase, but the page number(s) should always appear in the parentheses, not in the text of your sentence.</p>
<p class="t">Joe waited for the train.</p>
<p class="t">The train was late.</p>
<p class="t">Mary and Samantha took the bus.</p>
<script type='text/javascript' src='http://code.jquery.com/jquery-2.1.0.js'></script>
<script type='text/javascript'>
var chunkLength = 120;
var pattRegex = new RegExp('^[\\s\\S]{' + Math.floor(chunkLength / 2) + ',' + chunkLength + '}[.!?,]{1}|^[\\s\\S]{1,' + chunkLength + '}$|^[\\s\\S]{1,' + chunkLength + '} ');
$(document).ready(function () {
var element = this;
var arr = [];
var txt = replaceBlank($(element).text());
while (txt.length > 0) {
arr.push(txt.match(pattRegex)[0]);
txt = txt.substring(arr[arr.length - 1].length);
}
$.each(arr, function () {
var u = new SpeechSynthesisUtterance(this.trim());
window.speechSynthesis.speak(u);
});
});
</script>
<p class="t">MLA format follows the author-page method of in-text citation. This means that the author's last name and the page number(s) from which the quotation or paraphrase is taken must appear in the text, and a complete reference should appear on your Works Cited page. The author's name may appear either in the sentence itself or in parentheses following the quotation or paraphrase, but the page number(s) should always appear in the parentheses, not in the text of your sentence.</p>
<p class="t">Joe waited for the train.</p>
<p class="t">The train was late.</p>
<p class="t">Mary and Samantha took the bus.</p>
function resumeInfinity() {
window.speechSynthesis.resume();
timeoutResumeInfinity = setTimeout(resumeInfinity, 1000);
}
var utterance = new SpeechSynthesisUtterance();
utterance.onstart = function(event) {
resumeInfinity();
};
utterance.onend = function(event) {
clearTimeout(timeoutResumeInfinity);
};
var CHARACTER_LIMIT = 200;
var lang = "en";
var text = "MLA format follows the author-page method of in-text citation. This means that the author's last name and the page number(s) from which the quotation or paraphrase is taken must appear in the text, and a complete reference should appear on your Works Cited page. The author's name may appear either in the sentence itself or in parentheses following the quotation or paraphrase, but the page number(s) should always appear in the parentheses, not in the text of your sentence. Joe waited for the train. The train was late. Mary and Samantha took the bus.";
speak(text, lang)
function speak(text, lang) {
//Support for multipart text (there is a limit on characters)
var multipartText = [];
if (text.length > CHARACTER_LIMIT) {
var tmptxt = text;
while (tmptxt.length > CHARACTER_LIMIT) {
//Split by common phrase delimiters
var p = tmptxt.search(/[:!?.;]+/);
var part = '';
//Coludn't split by priority characters, try commas
if (p == -1 || p >= CHARACTER_LIMIT) {
p = tmptxt.search(/[,]+/);
}
//Couldn't split by normal characters, then we use spaces
if (p == -1 || p >= CHARACTER_LIMIT) {
var words = tmptxt.split(' ');
for (var i = 0; i < words.length; i++) {
if (part.length + words[i].length + 1 > CHARACTER_LIMIT)
break;
part += (i != 0 ? ' ' : '') + words[i];
}
} else {
part = tmptxt.substr(0, p + 1);
}
tmptxt = tmptxt.substr(part.length, tmptxt.length - part.length);
multipartText.push(part);
//console.log(part.length + " - " + part);
}
//Add the remaining text
if (tmptxt.length > 0) {
multipartText.push(tmptxt);
}
} else {
//Small text
multipartText.push(text);
}
//Play multipart text
for (var i = 0; i < multipartText.length; i++) {
//Use SpeechSynthesis
//console.log(multipartText[i]);
//Create msg object
var msg = new SpeechSynthesisUtterance();
//msg.voice = profile.systemvoice;
//msg.voiceURI = profile.systemvoice.voiceURI;
msg.volume = 1; // 0 to 1
msg.rate = 1; // 0.1 to 10
// msg.rate = usersetting || 1; // 0.1 to 10
msg.pitch = 1; //0 to 2*/
msg.text = multipartText[i];
msg.speak = multipartText;
msg.lang = lang;
msg.onend = self.OnFinishedPlaying;
msg.onerror = function (e) {
console.log('Error');
console.log(e);
};
/*GC*/
msg.onstart = function (e) {
var curenttxt = e.currentTarget.text;
console.log(curenttxt);
//highlight(e.currentTarget.text);
//$('#showtxt').text(curenttxt);
//console.log(e);
};
//console.log(msg);
speechSynthesis.speak(msg);
}
}
var myTimeout;
function myTimer() {
window.speechSynthesis.pause();
window.speechSynthesis.resume();
myTimeout = setTimeout(myTimer, 10000);
}
...
window.speechSynthesis.cancel();
myTimeout = setTimeout(myTimer, 10000);
var toSpeak = "some text";
var utt = new SpeechSynthesisUtterance(toSpeak);
...
utt.onend = function() { clearTimeout(myTimeout); }
window.speechSynthesis.speak(utt);
...
let timer = null;
let reading = false;
let readText = function(text) {
if (!reading) {
speechSynthesis.cancel();
if (timer) {
clearInterval(timer);
}
let msg = new SpeechSynthesisUtterance();
let voices = window.speechSynthesis.getVoices();
msg.voice = voices[82];
msg.voiceURI = 'native';
msg.volume = 1; // 0 to 1
msg.rate = 1.0; // 0.1 to 10
msg.pitch = 1; //0 to 2
msg.text = text;
msg.lang = 'zh-TW';
msg.onerror = function(e) {
speechSynthesis.cancel();
reading = false;
clearInterval(timer);
};
msg.onpause = function(e) {
console.log('onpause in ' + e.elapsedTime + ' seconds.');
}
msg.onend = function(e) {
console.log('onend in ' + e.elapsedTime + ' seconds.');
reading = false;
clearInterval(timer);
};
speechSynthesis.onerror = function(e) {
console.log('speechSynthesis onerror in ' + e.elapsedTime + ' seconds.');
speechSynthesis.cancel();
reading = false;
clearInterval(timer);
};
speechSynthesis.speak(msg);
timer = setInterval(function(){
if (speechSynthesis.paused) {
console.log("#continue")
speechSynthesis.resume();
}
}, 100);
reading = true;
}
}