$ sudo apt-get update
$ sudo apt-get install mbrola-fr4 

mbrola-fr4 is installed in your system.

Make ensure the mbrola-fr4 package were installed using the commands given below,

$ sudo dpkg-query -l | grep mbrola-fr4 *

You will get with mbrola-fr4 package name, version, architecture and description in a table

mbrola-fr4 package basic information: