Diseño e implementación de pedales de guitarra eléctrica de afinación, distorsión y delay

Abstract

The current music scene uses several electronic elements in order to tune an instrument, improve the produced sound or modify it to obtain a unique style. Focusing on electric guitars, these ones require an amplifier connected to its output port to appreciate its sound. However, over the years, professional guitarists have found the amplified natural sound as something very simple, many of them use pedals that give some effect to the sound of the guitar when it comes out. Following this background, the present work seeks to implement a digital tuning pedal, a distortion effect pedal and a delay effect pedal for electric guitar, each with its respective controls, power sources and cases. The tuning pedal will use electronic circuits to measure the signal coming from the guitar, and obtain its frequency will be performed by a 32-bit STM32 embedded system. The distortion and delay pedals will be analog, to maintain sound quality. This work was conceived to provide the market this equipment, at an affordable price, with a performance equal to the equipment of brands recognized worldwide.