Digital filter design with Arduino DUE and Matlab

In the bibliography and the different teaching courses on Digital Signal Processing (DSP) there are a substantial space aimed to the digital filters design theory including the approximation methods of Butterworth, Chebyshev, Elíptico, Cauer, pointing to the development of useful methods for calculating the filter coefficients Until recently the only way to experiment with filters in real time was with commercial DSP boards usually of high cost and low availability considering its application in the DSP laboratory practice. Nowadays, the features of the hardware and the low complexity of the software development environment (IDE) of the Arduino platform, give to it important characteristics for the practical implementation of DSP algorithms, especially the ARDUINO DUE board has enhanced features such as processor SAM3X8E Atmel ARM Cortex-M3, ideal for projects that require high capabilities of processing. In this article is proposed the flexible design and the automatic modification in the digital filter response, IIR or FIR by using Arduino DUE supported by Matlab libraries. The scheme proposed allows a simple and fast comparative analysis between the different filters.