emacspeak software package provides speech output interface to Emacs, you can install in your Ubuntu 16.04 LTS (Xenial Xerus) by running the commands given below on the terminal,
$ sudo apt-get update $ sudo apt-get install emacspeak
emacspeak is installed in your system.
Make ensure the emacspeak package were installed using the commands given below,
$ sudo dpkg-query -l | grep emacspeak *
You will get with emacspeak package name, version, architecture and description in a table
| Distro | Ubuntu 16 04 lts xenial xerus |
| Section | Editors |
| Package | emacspeak |
| Version | 41.0+dfsg-2 |
| Description | speech output interface to Emacs |
| Sub Section | Editors |