"Read Aloud" is a feature that allows you to select and play back the text of a website or web page with a built-in text-to-speech (TTS) voice. It is a fast, simple, and easy way to enjoy content on the web. You can choose from a variety of text-to-speech (TTS) voices, including those provided natively by the browser. 

In addition, the "Read Aloud" feature enables you to add the voice of the user to your page so you can listen to your voice in the page, even if you have no knowledge of speaking or reading. 

Once you set the language to English, you can select from the list of TTS voices provided by the browser. 

If you want to select a voice for your own website, you can download a TTS app from Google Play and import your own voice. In addition, you can use the Google Wavenet service.