A game system includes: a waveform data storage device for storing waveform data of waveform pattern indicating tone varying in time-series; a game controller for executing a game based on a game program and for repeatedly reading out the waveform data from the waveform data storage device and outputting...http://www.google.de/patents/US6527639?utm_source=gb-gplus-sharePatent US6527639 - Game system with musical waveform storage
