Making the Master System a master of speech

The Intellivision Voice Synthesis Module was released in 1982, giving the 16-bit console the power of speech. But unfortunately, most other consoles weren't quite as lucky. Sure, some systems, like the PC Engine CD and Nintendo Famicom, have the ability to play samples directly, so at least they can do pre-recorded speech. But the Sega Master System can't even do that. So how do we manage?

This is the kind of obscure stuff the internet needs more of.