Towards a fully implantable analogue cochlear prosthesis

This paper addresses the feasibility of a completely new design of cochlear prostheses replacing all digital signal processing by an analogue signal processor. The new design is based upon CMOS-VLSI transistors operating in weak inversion and in micro-power mode. Lowpass and bandpass filters are designed using the recently proposed log-domain technique. The proposed analogue system is smaller and consumes less power then most conventional devices