Toward a digital neuromorphic pitch extraction system

This paper presents the design of a biologically based signal processing sy stem implemented using standard digital inferior colliculus (IC) technology . The four-stage AM detection system is a step toward a full-pitch detectio n system and based on known mammalian physiology, The system is operational and has been successfully realized in held programmable grid array (FPGA) technology. Details of the system architecture, its operating principles, a nd the design decisions necessary to realize successfully neuromorphic syst ems in digital technology are given.