add female voice in festival
This is 124MB file. The voice is not much good, but slightly better than default. Not anything near that comes with opera speak feature in windows.
cd /usr/share/festival/voices/english/ wget http://www.speech.cs.cmu.edu/cmu_arctic/packed/cmu_us_clb_arctic-0.95-release.tar.bz2 tar jxf cmu_us_clb_arctic-0.95-release.tar.bz2 ln -s cmu_us_clb_arctic cmu_us_clb_arctic_clunits echo "(set! voice_default 'voice_cmu_us_clb_arctic_clunits)" >> /etc/festival.scm