Joy of Think

Ubuntu uses festival as its TTS solution.

sudo aptitude install festival

But it has problem to work with PluseAudio and Bluetooth. For overcoming this problem, I found following wiki. Please notice following section "Configuration for ESD or PulseAudio"

• Open the configuration file by typing gksudo gedit /etc/festival.scm or gedit ~/.festivalrc in a terminal.
• Add the following lines at the end of the file:
  (Parameter.set 'Audio_Method 'esdaudio)
• Save the file.