$ sudo apt-get update
$ sudo apt-get install festvox-ca-ona-hts 

festvox-ca-ona-hts is installed in your system.

Make ensure the festvox-ca-ona-hts package were installed using the commands given below,

$ sudo dpkg-query -l | grep festvox-ca-ona-hts *

You will get with festvox-ca-ona-hts package name, version, architecture and description in a table

festvox-ca-ona-hts package basic information: