A digital system is provided for synthesizing individual voices of musical instruments, which may then be combined into a musical composition. The system for a single voice is comprised of means for solving a system of simultaneous finite difference equations, where time is represented by real time in...http://www.google.com.tw/patents/US4736663?utm_source=gb-gplus-share專利 US4736663 - Electronic system for synthesizing and combining voices of musical instruments
