On the implementation of audio envelope generators with memristor-based circuits

The Memristor is considered as the fourth fundamental element besides the resistor, the capacitor and the inductor. When Leon Chua first introduced this element, it was just a theoretical idea. Today, after 30 years from Chua's first paper about it, it is possible to buy memristor devices. In this paper, we investigate a way to exploit memristors in a typical audio application: the implementation of envelope generators. It is possible to exploit the delayed switching property of memristors to realize long delays without the need of big capacitors. We present the implementation of a ramp generator by means of a memristor-based circuit. The ramp signal can be used as control signal in an audio device.