Voice signals amplified in a programmable gain, programmable bandwidth subsystem are digitized and buffered and the digitized signals are transferred over a dedicated high speed bus to a speech processor, thus relieving the speech processor and its resident host of the overhead of high data rate transfers...http://www.google.com/patents/US4991217?utm_source=gb-gplus-sharePatent US4991217 - Dual processor speech recognition system with dedicated data acquisition bus
Dual processor speech recognition system with dedicated data acquisition bus