Processamento digital de sinais aplicados a efeitos de áudio.

Abstract

This work deals with the development of efficient algorithms for digital signal processing for use in audio effects. Various types of digital filters were implemented using the CORDIC algorithm to improve the efficiency and speed of the filters. After the filters are ready, a program was developed in two parts, where the first part is an application of type function filter window (lowpass,high pass, bandpas to audio files in WAVE format, enabling visualization of the signal in the frequency domain, of the desired filter to apply in the signal, the signal in time, the filtered signal and filtered signal in frequency domain. The second part of the program is a graphic digital equalizer that is applied to the audio file. All functions performed were developed in ANSI C and optimized with the use of efficient algorithms to facilitate its use on other hardware such as DSP's and FPGA's.