Pixhawk Sounds

Hi There,
I am new in to pixhawk. Can you let me know, it is possible to change the tones indicates the different states of pixhawk (like Start up Ok, Start up Failed etc ) to speech? if possible, what are the ways?

Have a look here: https://github.com/PX4/Firmware/blob/master/src/lib/tunes/tune_definition.desc