VoiceLinks.js

var voices = speechSynthesis.getVoices();
var ops = {
  once: true,
  voice: voices && voices.filter(function(v) { return v.localService })[0]
};
for(var i=0; i< document.links.length; ++i) { 
  document.links[i].onmouseover = function() { 
    var utter =  new SpeechSynthesisUtterance(this.text); 
    if (ops.voice) utter.voice = ops.voice;
    speechSynthesis.speak(utter);
    if (ops.once) this.onmouseover = null;
  }
}

<label for="rate">Rate</label><input type="range" min="0.5" max="2" value="1" step="0.1" id="rate">
<label for="pitch">Pitch</label><input type="range" min="0" max="2" value="1" step="0.1" id="pitch">