Solid State Audio Control

This paper presents the results of an investigation into electronic circuitry and techniques to replace the electromechanical switches and potentiometers currently used in consumer audio equipment. Particular attention was devoted to the development of a touch sensor which is reliable and insensitive to electrical initerference. The logic circuitry was developed with standard CMOS integrated circuits to perform the interlock and memory functions provided by electromechaiiical controls.