flite — Speech synthesis engine. More information: <http://www.festvox.org/flite/doc/>.

List all available voices

flite -lv

Convert a text string to speech

flite -t "{{string}}"

Convert the contents of a file to speech

flite -f {{path/to/file.txt}}

Use the specified voice

flite -voice {{file://path/to/filename.flitevox|url}}

Store output into a wav file

flite -voice {{file://path/to/filename.flitevox|url}} -f {{path/to/file.txt}} -o {{output.wav}}