This code allows to 1) populate voices, 2) speech the text See the Pen <a href='https://codepen.io/sharkdeng/pen/JjKXVrY'>SpeechSynthesisUtterance-working-1</a> by Shark (<a href='https://codepen.io/sharkdeng'>@sharkdeng</a>) on <a href='https://codepen.io'>CodePen</a>.