A speech input and processing board for a personal computer

The IBM France Scientific Center has developed an experimental system based on the IBM Personal Computer to provide assistance to deaf children, both for speech training and for lip-reading. The system consists of a standard IBM Personal Computer system to which a specially designed speech input and processing board has been added. The hardware architecture of the board is described, explaining why a general purpose microprocessor has been preferred over commercially available digital signal signal processors. The board software and its relationship to the software running in the Personal Computer is also detailed.