ESpeak can generate text-to-speech (TTS) audio files. These can be useful for many reasons, such as creating your own Turing (Captcha) tests that are capable of speaking its challenge. This article will cover how to install eSpeak and create a simple TTS audio file in `.wav` format on CentOS 7. Log in as the `root` user and run the following command to install eSpeak. Test eSpeak by asking it to sound out the letters `y j w c t j` while writing the output as a `.wav` file named `espeak-tal......