This paper shows the design, simulation and implementation of Finite Impulse Response (FIR) digital filters through the use of computational tools and the Texas Instruments TMS320C50 DSP processor. A treatment of the digital filters is developed, presenting its corresponding assignment of coefficients to the types: low pass, high pass and subwoofer, considering different cut-off frequencies. The hardware is performed based on platform DSK (DSP Starter Kit) processor and real-time processing algorithms are designed and implemented on the DSP. The results are shown by comparative curves of magnitude and phase responses.