bachelorThesis
Sistema para equalização paramétrica de áudio em tempo real
Fecha
2018-12-11Registro en:
BAUER, Matheus. Sistema para equalização paramétrica de áudio em tempo real. 2018. 54 f. Trabalho de Conclusão de Curso (Graduação) - Universidade Tecnológica Federal do Paraná, Pato Branco, 2018.
Autor
Bauer, Matheus
Resumen
Digital equalizers are present in almost all multimedia systems today. The present work proportion the development of a five-band digital parametric equalizer composed of eighthorder type IIR filters implemented in the STM32F746G Discovery development kit. The equalizer was implemented with two approaches, in software was used the DSP library of the CMSIS, with filters in the structure direct form II transposed, and in hardware was made use of the codec WM8994. An equalizer is basically a set of filters with the function of attenuating undesired characteristics in the audio signal. A graphical interface has been developed to allow adjustment of the center frequency, bandwidth, equalizer gain and overall volume on an LCD display with touch screen.