This new talking Synth box almost puts the Speak and Spell to shame, even with a MIDI retrofit kit. It utilizes a SpeakJet IC ( which always seems to be backordered ) for generating its Speech and Tone sounds. The IC is controlled by a Microcontroller that reads Joystick and Switch positions and translates them into serial commands that SpeakJet can understand. Media samples are on this page, unfortunately the videos are QuickTime, but they are worth waiting for just to see this thing in action. Very Scientific!