Desenvolvimento de um equalizador gráfico digital de 10 bandas

Abstract

This work proposes the development of a 10-band digital graphic equalizer using the STM32F746G Discovery development kit. An audio graphic equalizer is a device formed by a set of filters designed to compensate for undesirable characteristics in the response of magnitude, opera- ting in the human audible spectrum, from 20 Hz to 20 kHz. The digital filters that make up the equalizer were designed from ISO 266. The equalizer proposed in this work offers a graphical user interface where it is possible to change the individual gain of each of the 10 filters and to change some characteristics such as volume and balance. This graphical interface was implemented using a LCD-TFT display with capacitive touchscreen available in the development kit.