Fin Fin: On Teo, the Magic Planet

Fin Fin is a virtual pet similar to Tamagotchi. The special feature of the simulation is speech recognition with a accompanying microphone. Of course it doesn't really understand what the player is saying but it reacts to the mode of speaking - a friendly tone makes it happy and loud or hectic speeches makes it sad.

Sometimes it speaks back and a "conversation" occurs. Over time it learns to distinguish the player's voice from others.