Implementação de um teremim digital com distorção

Abstract

This work consists of the implementation of a theremin, a musical instrument normally built in an analog form, composed of two sensors that detect the distance of the user’s hand in order to alter the device’s frequency and amplitude, according to each sensor’s function. The theremin proposed in this work is developed as a digital version using the ESP32 microcontroller programmed in C++. The data processed by the microcontroller are sent to a DAC module, which converts them into an audible signal, then amplified and played through a speaker. This theremin also includes the option to apply signal distortions, similar to those used in electric guitars, as well as a selector for the maximum operating frequency. As a result, the constructed theremin is easy to operate by any user and offers better maintenance, since its components can be easily replaced compared to an analog version.