MARINUS, N. S. M. L.; http://lattes.cnpq.br/7832057853651217; MARINUS, Nustenil Segundo de Moraes Lima.
Résumé:
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.