The original C64 software has been reverse engineered and ported to C by Sebastian Macke : http://simulationcorner.net/index.php?page=sam
So go and do your duty and harass him in the comments to do a Android version.
To read more and download the VST go here:
http://blog.wavosaur.com/text-to-speech-vst-vst-speek/#comment-249