Análise de sinais de biomagnéticos utilizando GNU Octave

Abstract

AC Biosusceptometry (ACB) is a widely used biomagnetic method for analyzing factors related to the human gastrointestinal tract. Digital filters and RSA (Running Spectral Analisys) visualization are two key-features utilized in ACB signal processing. MATLAB, a program widely used for development and prototyping due to its user-friendly interface and functionality, frequently implements all of these functions. GNU Octave, a program that shares the same development principles as MATLAB and was created to be compatible with it, is one of the most popular alternatives to MATLAB. Implementing a GNU octave script that is compatible with those used and approved for BAC was the goal of this work. To test Fourier's filtering and processing capabilities, tests using a synthetic signal and a ACB signal were conducted. Then procedures for frequency peak counting and RSA viewing were added. All BAC signal processing can be performed in the octave GNU with great compatibility, without the need for complex computing power or special skills. This is an entirely free app that certainly can be implemented without affecting the flow of ongoing research and destining software license funds for ACB development.