MotorMouth is an acoustic speech synthesizer. It is a mechanical version of the human mouth with moving lips, teeth, tongue, tip of the tongue, larynx and a blower which serves as the lungs.
These components and the motors and mechanisms which drive them are clearly visible. It is programmed with a few sentences and can pronounce individual vowels, semi-vowels, nasals, labials and fricatives. It can speak with varying pitch which it demonstrates when it says "I love you" and it can count from 1 to 10 in English and German.
For more information see http://martinriches.de/momomore.html