emacspeak software package provides speech output interface to Emacs, you can install in your Debian 7 (Wheezy) 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 | Debian 7 wheezy |
| Section | Editors |
| Package | emacspeak |
| Version | 29.0-9 |
| Description | speech output interface to Emacs |
| Sub Section | Editors |