DEMONSTRATING FOURIER-BASED FILTERING USING THE TMS320C5X EVM

This application report describes a experiment using the Texas Instruments (TI™) TMS320C5x Evaluation Module (EVM) and Fourier-based filtering to achieve real time response. The Discrete Fourier Transform (DFT) is employed to obtain a discreet spectrum of a source signal received by the EVM. The coefficients of the spectrum can then be modified using an MS-Windows-based user interface that mimics a mixing table for sound processing. DFT is again used to synthesize an output (filtered) signal.

This application report discusses the TI TMS320C5x EVM as a platform for academic research, derives the theory of the Fourier-based filter, and describes the user interface created for the implementation of the filter.

This document was an entry in the 1995 DSP Solutions Challenge, an annual contest organized by TI to encourage students from around the world to find innovative ways to use DSPs. For more information on the TI DSP Solutions Challenge, see TI's World Wide Web site at www.ti.com.

*DISCLAIMER: This document was part of the DSP Solution Challenge 1995 European Team Papers. It may have been written by someone whose native language is not English. TI assumes no liability for the quality of writing and/or the accuracy of the information contained herein.

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