中文 SpeechSynthesis API -- Firefox

Question

SpeechSynthesis API does not speak Mandarin on Firefox. Is it not supported? I couldn't find a list in the docs. I tried several different language tags.

Fiddle:

var msg = new SpeechSynthesisUtterance();
msg.text = '你好';
msg.lang = 'zh';
window.speechSynthesis.speak(msg);

（如果它有效，您应该听到 "nihao"。在 Chrome 上听起来 fine，在 OK 上Safari。在 Ubuntu 上的 Firefox 53.0.2 上，我听到 "letter letter"。）

Answer 1

在 Windows 上，Firefox 只有 3 个语音，全是英文。

我写了一个显示浏览器声音的jsbin:
https://jsbin.com/ginanegoqu/edit?js,output

if ('speechSynthesis' in window) {
    // Start an html table for languages details
    var text = '<table border=1><tr><th>Default<th>Language<th>Local<th>Name<th>URI</tr>';
    // Get voices; add to table markup
    function loadVoices() {
        var voices = speechSynthesis.getVoices();
        voices.forEach(function(voice, i) {
          // Add all details to table
          text += '<tr><td>' + voice.default + '<td>'
              + voice.lang + '<td>' + voice.localService
              + '<td>' + voice.name + '<td>' + voice.voiceURI;
        });
    }
    loadVoices();
    langList.innerHTML = text;
    // Chrome loads voices asynchronously.
    window.speechSynthesis.onvoiceschanged = function(e) {
        loadVoices();
        langList.innerHTML = text;
    }
}

中文 SpeechSynthesis API -- Firefox

SpeechSynthesis API for Chinese -- Firefox

html

javascript

firefox

text-to-speech