HTML5 之音频合成（SpeechSynthesis）

SpeechSynthesisVoice - Web APIs | MDN (mozilla.org)

var synUtterance = new window.SpeechSynthesisUtterance();

synUtterance.text = "批次：L11DXS7509457，欠料预警.";

synUtterance.lang = "zh-CN";

synUtterance.pitch = 2; //音调高低0～2，默认1

synUtterance.rate = 1;

window.speechSynthesis.speak(synUtterance);