### speechSynthesis Performs speech synthesis (experimental). Use `SpeechSynthesisUtterance.voice` and `window.speechSynthesis.getVoices()` to convert a message to speech. Use `window.speechSynthesis.speak()` to play the message. Learn more about the [SpeechSynthesisUtterance interface of the Web Speech API](https://developer.mozilla.org/en-US/docs/Web/API/SpeechSynthesisUtterance). ```js const speechSynthesis = message => { const msg = new SpeechSynthesisUtterance(message); msg.voice = window.speechSynthesis.getVoices()[0]; window.speechSynthesis.speak(msg); }; ``` ```js speechSynthesis('Hello, World'); // // plays the message ```