Digital Vlsi-implementation of a Psychoacoustically and Physiologically Motivated Speech Preprocessor

A digital VLSI implementation of a psychoacoustically and psysiologically motivated preprocessing algorithm is introduced. The algorithm consists of several stages motivated by the signal processing in the human ear and was successfully applied to a wide range of applications by the Medical Physics Group at the University of Oldenburg. The processing scheme has been partitioned and will be implemented in two ASICs. It is shown how an application of the algorithm has been used to determine the necessary wordlengths for a transfer of the floating point version of the model into a version suitable for a hardware implementation.