ElevatorGreat (old) project from Rocketboom’s Andrew – “This project was designed to create an isolated box which can be placed inside of an elevator to play dramatic sound designs based on the direction and altitude of an elevator. A microprocessor chip is stamped with conditionals to determine the location of the elevator based on barometric pressure and then pulses are sent to trigger an mp3 player which, when amplified, plays out from a complex set of musical relationships to create a dramatic and playful experience for the unassuming passengers.” Link.